What Does a Restricted Call Mean on Android? Unveiling the Mystery

What does a restricted call mean android? Ah, a question that has likely popped up on your phone screen, accompanied by a wave of curiosity, perhaps even a touch of suspicion. Imagine this: your phone rings, but instead of a name or number, you see “Restricted” or “Private Number.” It’s like a secret handshake from the digital world, a veiled invitation that begs the question: who’s on the other end?

This isn’t just about anonymous calls; it’s a deep dive into the fascinating world of phone privacy, caller ID, and the often-unseen mechanics of your Android device. We’re about to peel back the layers and reveal what these cryptic calls truly signify, from the technical reasons behind them to the potential implications for your personal security.

A restricted call, in essence, is a call where the caller has chosen, for various reasons, to hide their phone number from you. It’s like a cloak of invisibility, allowing the caller to remain anonymous, at least initially. There are several flavors of restricted calls, each with its own set of circumstances and potential motivations. They might be from individuals wanting to protect their privacy, businesses using automated systems, or, unfortunately, those with less-than-honorable intentions.

Understanding the nuances of these calls is the first step in navigating this digital landscape, ensuring you can make informed decisions about how to respond and, more importantly, how to stay safe.

Understanding Restricted Calls on Android: What Does A Restricted Call Mean Android

In the bustling digital landscape of Android smartphones, the term “restricted call” frequently surfaces, often shrouded in a veil of mystery. Understanding this concept is crucial for maintaining both privacy and security on your device. Let’s delve into the intricacies of restricted calls, unraveling their meaning, exploring their various forms, and examining the potential implications they hold.

Defining Restricted Calls

A restricted call, in the context of an Android phone, is a call where the caller’s phone number is intentionally hidden or blocked from being displayed on the recipient’s screen. This can be achieved through various methods, leading to a situation where the recipient only sees “Private Number,” “Blocked,” “Unknown,” or a similar indication instead of the caller’s actual phone number.

Types of Restricted Calls

There are several ways a call can become restricted on an Android device:

• Caller-Initiated Restriction: The most common scenario involves the caller actively choosing to hide their number before making the call. This is typically done by dialing a special code, such as
  -67, before the phone number. When the call is placed, the caller’s number is suppressed, and the recipient sees a restricted indication.
• Network-Level Restriction: Some mobile carriers offer the option to permanently restrict a user’s outgoing caller ID. This means that every call made from that number will appear as restricted unless the caller manually overrides it on a per-call basis.
• Call Blocking Apps: Certain third-party apps designed for call management and blocking can also be configured to block or restrict caller ID information. These apps often provide a suite of features, including the ability to identify and block spam calls, and they might automatically restrict the display of a caller’s number.
• International Calls: When making calls to or from certain countries, caller ID information may be suppressed due to technical limitations or regulatory requirements. In these cases, the recipient might see a restricted indication, even if the caller did not intentionally hide their number.

Security Implications of Restricted Calls

Receiving a restricted call can raise several security concerns, requiring careful consideration. Here are some of the potential implications:

• Difficulty in Identifying Unwanted Calls: The primary concern is the inability to easily identify the caller. This makes it difficult to screen calls, particularly those that may be unwanted, harassing, or potentially fraudulent.
• Increased Risk of Scams and Harassment: Restricted calls are often used by scammers and harassers to avoid detection. They may employ these methods to make unsolicited calls, engage in phishing attempts, or issue threats without revealing their identity.
• Limited Recourse in Case of Malicious Activity: If a restricted call involves illegal activities, such as threats or harassment, the recipient has limited options for tracing the call back to the source. This can hinder investigations by law enforcement agencies.
• Potential for Social Engineering: Callers using restricted numbers might attempt social engineering tactics, manipulating the recipient into providing sensitive information. The anonymity provided by the restricted number can increase the effectiveness of such techniques.

Definition of Restricted Call: A call where the caller’s phone number is hidden or blocked from being displayed on the recipient’s phone screen, typically indicated as “Private Number,” “Blocked,” or “Unknown.”

Causes of Restricted Calls

Understanding why your Android device sometimes displays “Restricted” for incoming calls is like solving a mystery. It’s a blend of technology, networks, and a dash of privacy settings. Unraveling these reasons helps you better manage your calls and understand who’s trying to reach you.

Common Reasons for Restricted Calls

The term “restricted call” on your Android phone can stem from a few primary sources. These range from deliberate privacy measures by the caller to technical limitations within the network itself. Each reason sheds light on a different facet of how phone calls are routed and presented to you.

Blocked Number vs. Restricted Number

While both blocked and restricted calls prevent you from immediately knowing the caller’s identity, they operate differently. Understanding these distinctions clarifies the actions you can take in response to each.* Blocked Number: This is a call from a number you’ve specifically added to your “block list” within your phone’s settings. The call is rejected before it even reaches you, usually going straight to voicemail or a pre-recorded message.

The caller likely receives a busy signal or a message indicating the call cannot be completed. This is your personal firewall.

Restricted Number

This type of call hides the caller’s number, typically displaying as “Private Number,” “Unknown,” or “Restricted.” The call still reaches your phone, and you have the option to answer it. The caller has chosen, or their network has caused, their number to be hidden.Think of it this way: blocking is like putting up a “Do Not Disturb” sign, while a restricted call is like someone knocking without revealing their identity.

Caller ID and Restricted Calls

Caller ID, or Caller Identification, is the service that transmits a caller’s phone number to the receiving party. When a call is restricted, this information is deliberately withheld. The absence of a number on your screen is the direct result of this withholding. The reason behind the withholding is varied, but it’s crucial to understanding the nature of the call.Consider the case of a call center employee making outbound calls.

The caller ID may be masked to avoid direct callbacks or to protect the privacy of the calling number.

Network-Related Reasons for Restricted Calls

Several network-related factors can result in a call appearing as restricted. These often have to do with the way calls are routed, the capabilities of the calling network, or the choices made by the caller.Here’s a breakdown:* Caller Opting to Hide Caller ID: The most common reason. Many phones and calling services allow users to actively hide their number before placing a call.

This is often done by dialing a special code before the phone number (e.g.,67 in North America).

Network Limitations

Some older or less sophisticated networks may not reliably transmit caller ID information. This can result in all calls from that network appearing as restricted.

International Calls

Calls originating from certain countries or networks may have difficulty transmitting caller ID due to international routing complexities or different technical standards.

VoIP Services

Voice over Internet Protocol (VoIP) services often offer the option to hide caller ID. If a call originates from a VoIP service, the caller may choose to keep their number private.

Cellular Network Issues

Temporary network outages or congestion can occasionally cause caller ID information to be dropped during call transmission. This is usually a transient issue.

Call Spoofing

In some instances, malicious actors may use software to disguise their phone number. While this is not always the cause of a restricted call, it is a possibility, particularly if you are receiving unsolicited calls.

Identifying a Restricted Call

Recognizing a restricted call on your Android device is a crucial skill in the modern age, where unwanted solicitations and potential scams are commonplace. Being able to quickly identify these calls can save you valuable time and protect you from potential fraud. Understanding the visual cues and notifications associated with a restricted call empowers you to make informed decisions about whether to answer or ignore an incoming call.

Visual Cues and Notifications

When a restricted call comes through, your Android phone provides distinct visual indicators. These cues are designed to immediately inform you that the caller has chosen to withhold their caller ID.

• Caller ID Display: The most common indication is the absence of a name or number on your screen. Instead, you will typically see one of the following displays:
  • “Private number”
  • “Restricted”
  • “Unknown”
  • “Blocked” (if the number is blocked)
• Notification Tone: The notification tone for a restricted call is usually the same as for any other incoming call. However, the lack of caller ID information is the key differentiator.
• Call Log Entry: After the call, the call log will also reflect the restricted status. The entry will show “Private number,” “Restricted,” or a similar designation instead of the caller’s phone number.

Viewing Caller Information (If Any), What does a restricted call mean android

While a restricted call intentionally hides the caller’s number, there are limited scenarios where you might be able to glean some information, depending on your carrier and the nature of the call.

• Voicemail: If the caller leaves a voicemail, the voicemail transcript or audio recording might provide clues about the caller’s identity. Listen carefully for names, businesses, or any other identifying information.
• Call Blocking/Tracing Services: Some carriers and third-party apps offer call-blocking or tracing services. These services may be able to identify or provide additional information about restricted callers, but this depends on the service’s capabilities and the caller’s methods of hiding their number.
• Law Enforcement: In cases of harassment, threats, or other illegal activities, law enforcement agencies can sometimes trace restricted calls. This typically requires a warrant and is only pursued in serious situations.

Android Interface Elements

The Android interface presents these restricted call notifications in a consistent manner across most devices. The specifics might vary slightly depending on the manufacturer and Android version, but the core elements remain the same.

• Incoming Call Screen: When a restricted call comes in, the incoming call screen will display the generic “Private number,” “Restricted,” or “Unknown” notification in the area where the caller’s name or number would normally appear. The accept and decline buttons will function as usual.
• Call Log: After the call, open your phone app and go to the “Recents” or “Call History” section. You will see an entry for the restricted call. This entry will also display “Private number,” “Restricted,” or “Unknown” instead of a phone number or contact name. Tapping on the entry will not reveal any additional information about the caller, beyond the date and time of the call.

• Notification Shade: If you miss the call, a notification will appear in your notification shade. This notification will again display “Private number,” “Restricted,” or “Unknown” as the caller information.

Blocking and Unblocking Restricted Calls

Sometimes, those pesky restricted calls become more than just an annoyance. They can be downright disruptive. Thankfully, Android offers several built-in features, and a plethora of third-party apps, to help you regain control over your phone’s incoming calls. Let’s delve into the ways you can block and, if necessary, unblock these hidden numbers.

Blocking Restricted Calls on Android

Taking control of your calls starts with understanding the tools available to you. Android provides a straightforward way to block restricted numbers, preventing them from interrupting your day.

• Using the Phone App’s Built-in Blocking: This is the most basic, and often the most convenient, method.
  1. Open your Phone app.
  2. Navigate to your call history (usually by tapping the “Recents” or “Call Log” icon).
  3. Find the restricted number you want to block. Remember, it will likely display as “Private Number,” “Unknown,” or something similar.
  4. Tap on the number or the information icon (often an “i” or three vertical dots) next to the number.
  5. Look for an option that says “Block,” “Block number,” or “Report as spam.” The wording might vary slightly depending on your Android version and phone manufacturer.
  6. Confirm your choice, and the number should be blocked. You might be asked if you want to also block future calls from similar numbers.
• Blocking from Contacts: If you’ve somehow saved a restricted number to your contacts (perhaps you accidentally answered the call and saved the number), you can block it from there.
  1. Open your Contacts app.
  2. Find the contact you want to block.
  3. Tap on the contact’s details.
  4. Look for the “Block” option, which might be hidden under a “More” or “Edit” menu.
  5. Confirm the blocking action.
• Using “Do Not Disturb” (DND) Mode: While not specifically a call-blocking feature, DND can be configured to silence calls from unknown numbers, which often includes restricted numbers.
  1. Go to your phone’s Settings.
  2. Tap on “Sound” or “Notifications” (the exact location varies).
  3. Find “Do Not Disturb.”
  4. Customize the “Exceptions” settings. Here, you can allow calls from specific contacts or block calls from everyone not in your contacts. This is where you can effectively silence restricted calls.

Unblocking Restricted Calls

If you accidentally blocked a number or later decide you want to receive calls from a previously blocked restricted number, the unblocking process is equally simple.

• Unblocking from the Phone App:
  1. Open your Phone app.
  2. Go to the settings, usually accessible via three dots or a gear icon in the top right corner.
  3. Look for a “Blocked numbers” or “Blocked contacts” section.
  4. You should see a list of all the numbers you’ve blocked.
  5. Find the restricted number you want to unblock.
  6. Tap the “Unblock” option next to the number.
• Unblocking from Contacts: If the restricted number is saved in your contacts, you can also unblock it there.
  1. Open your Contacts app.
  2. Find the contact you had blocked.
  3. Go to the contact’s details.
  4. Look for an “Unblock” option, which might be under a “More” or “Edit” menu.
  5. Confirm the unblocking action.

Call-Blocking App Comparison

While Android’s built-in features are useful, third-party apps often offer more advanced blocking capabilities and features. Here’s a comparison of some popular call-blocking apps, highlighting their key features. Remember, the availability and specific features of these apps may change over time, and it’s always recommended to check the app’s details on the Google Play Store for the most up-to-date information.

App Name	Key Features	Spam Protection	Additional Features
Truecaller	Caller ID, Spam Blocking, Call Recording (varies by region/device)	Extensive spam database and community reporting	Call recording, messaging, premium features like advanced blocking options and ad-free experience. Offers a visually intuitive interface, displaying caller information, and spam ratings.
Hiya	Caller ID, Spam Blocking, Reverse Phone Lookup	Uses a vast database of known spammers and telemarketers	Call blocking based on category (e.g., telemarketers, robocalls), SMS spam filtering, and identification of business calls. The interface is clean and user-friendly, providing clear call identification.
Call Blocker Free	Call Blocking, Blacklist Management	User-defined blacklists and community-reported spam	Simple call blocking, flexible blacklisting options, and the ability to block calls from specific area codes. The interface is straightforward, focusing on call blocking functionality.
Mr. Number	Caller ID, Spam Blocking, Block by Prefix/Area Code	Large spam database, user reporting	Blocking calls from specific prefixes or area codes, SMS blocking, and the ability to report spam calls. It is a good choice for those who want a more granular control over call blocking.

This table provides a snapshot of the capabilities of some popular call-blocking apps. The best choice for you will depend on your specific needs and preferences. Consider factors like spam protection effectiveness, additional features, and user interface when making your decision.

Dealing with Unwanted Restricted Calls

Unwanted restricted calls can range from mildly annoying to downright frightening. Managing these calls effectively is crucial for maintaining your peace of mind and, in some cases, ensuring your safety. This section provides a comprehensive guide to help you navigate this often frustrating situation.

Managing Persistent Unwanted Restricted Calls

Dealing with persistent unwanted calls requires a multifaceted approach. Simply ignoring them might not be enough, especially if the calls escalate in frequency or become harassing. Here’s a breakdown of effective strategies:* Call Blocking: Utilize your phone’s built-in call-blocking features or third-party apps to block numbers that consistently call you, even if they are restricted. This can significantly reduce the number of unwanted calls you receive.* Call Screening: Some phones and apps offer call-screening features.

This allows you to automatically filter calls from unknown or restricted numbers, requiring the caller to identify themselves before the call connects.* Silence Unknown Callers: Enable the “Silence Unknown Callers” feature in your phone settings. This sends calls from numbers not in your contacts directly to voicemail. While you won’t be able to identify the caller, it prevents your phone from ringing and interrupting your day.* Change Your Number (as a last resort): If the harassment is severe and the calls persist despite your efforts, changing your phone number might be necessary.

This is a drastic measure but can offer immediate relief. Remember to inform important contacts of your new number.* Consider a Call Blocker Device: Physical call blocker devices can be plugged into your landline. These devices often have advanced features like screening calls based on caller ID (even if it’s restricted) and allowing you to create a “block list.”

Reporting Harassing or Threatening Restricted Calls

If the restricted calls are harassing, threatening, or involve any form of illegal activity, it is imperative to take action beyond simply blocking the calls. Reporting the calls to the appropriate authorities is crucial. Here’s how:* Document Everything: Keep a detailed record of each call, including the date, time, duration, and any content of the call, even if it’s just silence.

Save voicemails if possible.* Contact Your Phone Carrier: Report the calls to your phone carrier. They may be able to investigate the calls and potentially identify the source. They might also have tools to help you manage the calls.* File a Police Report: If the calls involve threats, harassment, or stalking, file a police report. Provide the police with all the documentation you have gathered.* Consider a Restraining Order: In cases of severe harassment or stalking, you might be able to obtain a restraining order, which legally prohibits the caller from contacting you.

This requires legal action and evidence of the harassment.* Federal Trade Commission (FTC): You can report unwanted calls to the FTC. While they may not be able to resolve your specific issue, your report helps them identify and take action against telemarketing scams and other illegal activities.

Potential Legal Considerations When Dealing with Unwanted Calls

Unwanted calls, particularly those that are harassing or threatening, can have legal implications for the caller. Here are some of the potential legal considerations:* Harassment: Repeated calls, especially those that are unwanted and cause distress, can be considered harassment, which is illegal.* Threats: Any threats of violence or harm made during the calls can lead to criminal charges.* Stalking: If the caller is repeatedly contacting you and making you feel unsafe, this could be considered stalking, which is a serious crime.* Violation of the Telephone Consumer Protection Act (TCPA): The TCPA regulates telemarketing calls and text messages.

If the calls are commercial in nature and violate the TCPA, the caller could face legal penalties.* Civil Lawsuits: You may be able to pursue a civil lawsuit against the caller for damages, such as emotional distress or lost wages. This typically requires legal counsel.* The Importance of Evidence: For any legal action, you must have strong evidence, including call logs, voicemails, and witness testimony.

Tips for Staying Safe When Answering a Restricted Call

Answering a restricted call can be a gamble, but there are ways to minimize your risk and stay safe:* Trust Your Gut: If something feels off, end the call immediately.* Avoid Giving Out Personal Information: Never provide your name, address, Social Security number, or any other personal information to an unknown caller.* Don’t Engage in Arguing: Do not argue with the caller.

This can escalate the situation.* Ask for Identification: If the caller claims to be from a legitimate organization, ask for their name, the organization’s name, and a call-back number. Then, independently verify the information before providing any information or taking any action.* Record the Call (with consent where required): In some jurisdictions, it’s legal to record a phone call if you are a party to the conversation.

Check the laws in your area. If you do record, make sure to state that you are recording the call at the beginning.* If You Feel Threatened, Hang Up and Contact Authorities: Your safety is paramount. If you feel threatened in any way, end the call and immediately contact the police.

Privacy Implications of Restricted Calls

Receiving a call from a “restricted” or “private” number might seem harmless, but it can actually raise significant privacy concerns. While the caller’s number is hidden, there are still potential risks associated with answering these calls and interacting with the person on the other end. Understanding these risks is crucial for protecting your personal information and maintaining your digital privacy.

Information a Restricted Caller Might Obtain

A restricted caller, despite their number being hidden, can potentially gather various pieces of information about you, even if you don’t explicitly share it. This information can be used for various purposes, some of which may be malicious.

• Your Voice and Reaction: Even if you don’t reveal personal details, your voice, tone, and reaction to the call can be recorded and analyzed. This information can be used for voice cloning or to gauge your emotional state for potential scams.
• Verification of a Live Number: Answering the call confirms that the number is active and that someone is likely to answer. This is valuable information for spammers and scammers who are building or updating their contact lists.
• Geographic Information (Potentially): While it’s rare, sophisticated callers using specific technologies might be able to infer your general location based on your area code or the quality of the call, especially if you’re using a landline.
• Social Engineering Opportunities: A restricted caller can use social engineering tactics to manipulate you into revealing personal information. They might pose as someone from your bank, a government agency, or a trusted company.

Protecting Your Privacy When Receiving Calls from Unknown Numbers

Taking proactive steps to safeguard your privacy is essential when dealing with calls from unknown or restricted numbers. Here are some strategies to implement.

• Don’t Answer: The simplest and often most effective method is to let the call go to voicemail. This prevents the caller from confirming that your number is active and gives you time to assess the situation.
• Check Voicemail: Review your voicemail messages carefully. Scammers often leave generic messages or try to create a sense of urgency to get you to call back.
• Use Call Blocking: Most smartphones allow you to block specific numbers. If you know a number is associated with spam or harassment, block it immediately.
• Be Wary of Information Requests: Never share personal information like your social security number, bank account details, or passwords over the phone, especially with unknown callers.
• Verify Callers: If a caller claims to be from a legitimate organization, hang up and call the organization directly using a number you find independently (e.g., on their website) to verify the call’s authenticity.
• Report Suspicious Calls: Report any suspicious calls to the Federal Trade Commission (FTC) or your local authorities. This helps law enforcement track and potentially shut down scams.

Potential Risks of Sharing Personal Information with a Restricted Caller: A Detailed Example

Imagine Sarah receives a call from a restricted number. The caller claims to be from her bank, stating that there’s been suspicious activity on her account. The caller, using a calm and professional tone, asks Sarah to verify her identity by providing her full name, date of birth, and the last four digits of her social security number. Sarah, concerned about her finances, complies.

• The Outcome: In reality, the caller was a scammer. Armed with Sarah’s information, the scammer can now potentially access her bank account, open fraudulent credit cards in her name, or even sell her information on the dark web.
• The Long-Term Impact: Sarah now faces identity theft, financial losses, and the arduous process of recovering her credit and personal information. This can involve filing police reports, contacting credit bureaus, and spending countless hours dealing with the aftermath.
• The Lesson: This example highlights the importance of never sharing sensitive information with unknown callers, even if they appear to be from a trusted source. Always independently verify the caller’s identity by contacting the organization directly.

Troubleshooting Restricted Call Issues

Dealing with restricted calls can sometimes feel like navigating a maze, but don’t worry, we’re here to help you clear the path. From frustrating missed calls to potential privacy concerns, understanding how to troubleshoot these issues is key to reclaiming control of your Android phone. Let’s dive into some common problems and practical solutions.

Common Problems with Restricted Calls

Encountering restricted calls can manifest in various ways, each presenting its own set of challenges. It’s crucial to recognize these issues to implement effective troubleshooting strategies. Here’s a rundown of common problems users face:

• Missed Calls with No Caller ID: This is perhaps the most frustrating scenario. You see a missed call notification, but the caller’s information is hidden, leaving you in the dark about who tried to reach you.
• Calls Automatically Sent to Voicemail: Some Android phones are configured to send restricted calls directly to voicemail, preventing you from even knowing someone tried to call.
• Inability to Return the Call: Without a number, you can’t simply call back and discover who the caller was. This can be especially problematic if the call was important.
• Technical Glitches: Occasionally, problems with your phone’s software or the network can lead to unexpected behavior with restricted calls, such as calls not connecting or displaying incorrectly.

Troubleshooting Steps for Restricted Call Issues

When faced with restricted call problems, a systematic approach can help you pinpoint the root cause and find a solution. Here’s a practical guide to troubleshooting:

1. Check Your Blocked Numbers List: Ensure that you haven’t accidentally blocked the number, or a range of numbers, from which the restricted call originated. Navigate to your phone’s call settings and review the blocked numbers list.
2. Restart Your Phone: A simple restart can often resolve minor software glitches that might be interfering with call reception. This refreshes your phone’s system and can clear up any temporary issues.
3. Update Your Android Software: Ensure your phone’s operating system is up to date. Software updates often include bug fixes and performance improvements that could address call-related problems. Go to your phone’s settings and check for software updates.
4. Contact Your Carrier: Your mobile carrier can provide valuable insights into network-related issues that might be affecting restricted calls. They can also confirm if any caller ID blocking services are active on your account.
5. Factory Reset (as a Last Resort): If all else fails, consider a factory reset. This will erase all your data, so back up your phone beforehand. A factory reset can resolve deep-seated software issues but should only be used as a final measure.

Checking Network Settings for Proper Call Reception

Proper network settings are fundamental to ensuring you receive all calls, including those that might be marked as restricted. Here’s how to check your settings:

• Ensure Mobile Data is Enabled (if using VoLTE): If you use Voice over LTE (VoLTE), make sure mobile data is enabled. VoLTE uses your data connection to transmit calls. Go to your phone’s settings, then “Connections” or “Network & Internet,” and ensure mobile data is turned on.
• Check Your Network Mode: Your phone’s network mode should be set to automatically select the best available network (e.g., 4G/3G/2G). Incorrect settings can prevent calls from connecting. Go to your phone’s settings, then “Connections” or “Network & Internet,” and check the network mode.
• Review Airplane Mode: Make sure Airplane Mode is off. When activated, Airplane Mode disables all wireless communications, including phone calls. Swipe down from the top of your screen to access quick settings and ensure Airplane Mode is disabled.
• Check Your Signal Strength: A weak signal can lead to dropped calls or problems receiving calls. Observe the signal bars in the top corner of your screen. If the signal is weak, move to a location with better reception.

Potential Solutions for Restricted Call Problems

Addressing restricted call issues can involve a range of solutions, depending on the specific problem. Here’s a table summarizing common issues and potential fixes:

Problem	Possible Cause	Solution	Additional Notes
Missed Calls with No Caller ID	Caller ID blocking by the caller or network issues.	Check your blocked numbers list; contact your carrier.	The caller might be using a service to hide their number, or there could be a network outage.
Calls Automatically Sent to Voicemail	Call forwarding settings or phone configuration.	Review call forwarding settings; check your phone’s call settings.	Some phones have an option to automatically send restricted calls to voicemail.
Inability to Return the Call	Caller ID blocking or technical limitations.	Contact your carrier; use a call-back service (if available).	Without a number, it’s impossible to call back directly. Call-back services might work, but success varies.
Technical Glitches	Software bugs or network problems.	Restart your phone; update the software; contact your carrier.	Software updates often resolve call-related issues. Network problems can also affect call reception.