Things You Should Know:
Unblocking a contact on your Android device, including popular models like Samsung Galaxy, is a straightforward task. Whether you’ve changed your mind or accidentally blocked a number, here’s how you can reconnect:
- Tap the ‘Phone’ app on your device. It’s your gateway to all things call-related.
- Tap ‘More,’ then ‘Settings.’ You’re on the right track!
- Now, select ‘Blocked numbers.’ You’ll see a list of all the numbers you’ve blocked.
- Simply find the number you want to unblock and delete it from the list. That’s it!
Unblocking via Carrier: Depending on your carrier, you may have specific tools to manage blocked numbers. For example:
- T-Mobile Users: Go to ‘Family Allowance’ in ‘My T-Mobile.’
- Verizon Users: Look for ‘Blocks’ in ‘My Verizon.’
- AT&T Users: Use the ‘AT&T ActiveArmor’ app to manage blocks.
Remember, the exact steps might vary slightly depending on your phone’s model and carrier. But with these general guidelines, you should be well on your way to unblocking contacts and letting those calls come through again.
Ever found yourself in a situation where you’ve blocked a number on your Android phone, only to realize later that you need to unblock it? It happens to the best of us. Maybe it was a number you thought you didn’t need anymore, or perhaps you blocked it in a moment of frustration. Whatever the reason, unblocking a number on Android is a straightforward process.
This guide will walk you through the steps to unblock a number on various Android devices, from stock Android to Samsung, HTC, LG, and OnePlus phones. We’ll also delve into how third-party apps can assist you and what to do if you encounter any issues along the way. Let’s dive in!
Understanding Blocked Numbers
What it Means to Block a Number
When you block a number on your Android device, you’re essentially setting up a barrier that prevents that specific number from reaching you through calls or text messages. It’s a handy feature when you’re dealing with unwanted calls, be it from persistent telemarketers or an ex who can’t take a hint. Once a number is blocked, your phone treats any incoming calls or messages from that number as if they don’t exist.
Consequences of Blocking a Number
Blocking a number comes with certain consequences that you should be aware of.
- Firstly, the person using the blocked number won’t be able to reach you through traditional calls or text messages. They won’t receive any notification about being blocked, but their calls will be directed to voicemail, and their messages won’t be delivered.
- Secondly, blocking a number doesn’t necessarily mean you’re cutting off all contact from that person. They can still reach you through other means such as email or social media platforms. Also, if you’re using a third-party app for calls or messages, like WhatsApp or Viber, the blocked number might still be able to contact you through these apps unless you block them there as well.
- Lastly, remember that blocking is specific to the device, not your number. If you switch phones but keep the same number, you’ll need to block the unwanted numbers again on the new device.
How to Know if Anyone Blocked Your Number on an Android Phone
- Repeatedly Sent to Voicemail: If your calls are consistently being sent to voicemail without ringing, it might be a sign you’ve been blocked.
- Text Messages Go Unanswered: If your text messages are never replied to and calls aren’t answered, this could be another indication.
- Use a Different Number: Try calling the person from another number. If they answer, it might mean your original number has been blocked.
- Ask Directly: If you’re still unsure, you might consider asking the person directly. It’s a straightforward approach that can clear up any confusion.
Please note that these methods are not foolproof, as there could be other reasons for these behaviors, such as the person’s phone being off or a network issue. But these signs can give you some clues about whether your number has been blocked.
How to See Blocked Numbers on Android
- Tap the ‘Phone’ app on your Android device.
- Tap ‘More,’ usually represented by three dots, then select ‘Settings.’
- Select ‘Blocked numbers.’ Here, you’ll see a list of all the numbers you’ve blocked.
And that’s it! In just a few quick taps, you can view all the blocked numbers on your Android phone. Whether you’re checking for a specific number or just curious about who you’ve blocked, this simple process has you covered.
How to Unblock a Phone Number on Android: Step-by-Step Guide
1. Unblock a Number on Stock Android
Unblocking a number on a stock Android device is a straightforward process. It involves going into your phone settings and removing the number from your blocked list. Here’s how:
- Open the Phone app on your device.
- Tap on the three-dot menu icon in the top-right corner and select ‘Settings’.
- Scroll down and tap on ‘Blocked numbers’.
- You’ll see a list of all the numbers you’ve blocked. Find the number you want to unblock and tap the ‘X’ next to it.
2. Unblock a Number on Samsung Phones
Samsung phones have a slightly different process, but it’s still quite simple. Follow these steps:
- Open the ‘Phone’ app.
- Tap on the three-dot menu icon and select ‘Settings’.
- Tap on ‘Block numbers’.
- You’ll see a list of all blocked numbers. To unblock a number, simply tap the ‘-‘ symbol next to it.
3. Unblock a Number on HTC Phones
If you’re using an HTC phone, here’s how you can unblock a number:
- Open the ‘Phone’ app.
- Tap on the three-dot menu icon and select ‘Call blocking’.
- You’ll see a list of blocked numbers. Find the number you want to unblock and tap ‘Unblock’.
4. Unblock a Number on LG Phones
For LG phone users, follow these steps to unblock a number:
- Open the ‘Phone’ app.
- Tap on the three-dot menu icon and select ‘Call settings’.
- Tap on ‘Reject calls’.
- You’ll see a list of blocked numbers. Find the number you want to unblock and tap the ‘X’ next to it.
5. Unblock a Number on OnePlus Phones
If you’re using a OnePlus phone, you can unblock a number by following these steps:
- Open the ‘Phone’ app.
- Tap on the three-dot menu icon and select ‘Settings’.
- Tap on ‘Blocked numbers’.
- You’ll see a list of all blocked numbers. To unblock a number, tap the ‘Remove’ button next to it.
How to Using Third-Party Apps to Unblock Phone Numbers
Here are some popular third-party apps that can be used to unblock phone numbers on Android devices:
- Truecaller: Known for its caller ID and spam blocking features, Truecaller also allows you to unblock numbers easily.
- Mr. Number: This app not only blocks unwanted calls and messages but also allows you to unblock numbers with just a few taps.
- Call Control: Apart from its robust call and SMS blocking features, Call Control enables you to unblock numbers easily.
- Hiya: Hiya is a powerful app that identifies callers, blocks spam calls, and also allows for easy unblocking of numbers.
- Should I Answer?: This app is great for managing your calls, including blocking and unblocking numbers.
- Calls Blacklist: As the name suggests, this app allows you to create a blacklist of unwanted numbers, and you can also unblock numbers whenever you want.
- Avast Mobile Security & Antivirus: Known for its antivirus features, Avast also offers call blocking and unblocking features.
Remember, while these apps can provide additional features, they also require access to your call logs and contacts. Always ensure you’re comfortable with the permissions an app requests before installation.
1. Truecaller
Truecaller is a widely used mobile app that offers caller identification, call blocking, and call recording features. It helps users identify unknown callers and block unwanted calls. Truecaller has a large user base, which contributes to its vast directory of identified callers. It’s a great tool for managing your calls and ensuring that you only receive the ones you want.
Here’s how you can use Truecaller to unblock numbers:
- Open the Truecaller app on your Android device.
- Tap on the menu icon (three horizontal lines) in the top left corner of the screen.
- From the menu, select ‘Block’.
- You will see a list of all the numbers you have blocked. To unblock a number, simply tap on the ‘Unblock’ button next to it.
Remember, for Truecaller to work effectively, you need to give it permission to access your call logs and contacts. It uses this information to identify callers and block unwanted calls.
2. Mr. Number
Mr. Number is a powerful call blocking app that protects your phone from unwanted calls, spam, and scams. It allows you to block calls and SMS from individual numbers, an area code, or an entire country. With its user-friendly interface, Mr. Number makes it easy to block and unblock numbers, providing you with more control over who can reach you.
Here’s how you can use Mr. Number to unblock numbers:
- Open the Mr. Number app on your Android device.
- Tap on the ‘Blocking’ tab at the bottom of the screen.
- You will see a list of all the numbers you have blocked. To unblock a number, tap on the ‘Unblock’ button next to the number you wish to unblock.
By using Mr. Number, you can effectively manage your calls and ensure that only the people you want to hear from can reach you. Remember, for Mr. Number to work effectively, you need to give it permission to access your call logs and contacts.
3. Call Control
Call Control is a comprehensive call and SMS blocker that’s designed to stop robocalls, telemarketers, and spam texts. It uses community reports and do not call complaints to block unwanted callers. The app also features personal call and SMS controls, allowing you to block or unblock specific numbers.
Here’s how you can use Call Control to unblock numbers:
- Open the Call Control app on your Android device.
- Tap on the ‘Settings’ icon at the bottom right corner of the screen.
- From the menu, select ‘My Blacklist’.
- You will see a list of all the numbers you have blocked. To unblock a number, tap on the ‘Remove’ button next to the number you wish to unblock.
Call Control is a great tool for managing your calls and ensuring that you’re not bothered by unwanted calls or texts. As with other similar apps, you’ll need to give Call Control permission to access your call logs and contacts for it to function effectively.
4. Hiya
Hiya is a reliable app that offers robust call blocking features to protect users from spam and unwanted calls. It identifies callers, blocks nuisance calls, and provides a caller ID function. Hiya is known for its high accuracy in caller identification, making it a popular choice among users who want to manage their calls effectively.
Here’s how you can use Hiya to unblock numbers:
- Open the Hiya app on your Android device.
- Tap on the ‘Protect’ icon at the bottom of the screen.
- From the menu, select ‘Blocklist’.
- You will see a list of all the numbers you have blocked. To unblock a number, tap on the ‘minus’ symbol next to the number you wish to unblock.
Hiya is a powerful tool for managing your calls and ensuring that you’re not disturbed by unwanted calls. As with other similar apps, you’ll need to give Hiya permission to access your call logs and contacts for it to function effectively.
5. Should I Answer?
“Should I Answer?” is an innovative app that helps you decide whether or not to pick up incoming calls. It provides detailed information about the caller, including ratings and reviews from other users. This app is particularly useful for identifying and blocking spam calls, telemarketing calls, and other unwanted communications.
Here’s how you can use “Should I Answer?” to unblock numbers:
- Open the “Should I Answer?” app on your Android device.
- Tap on the ‘Menu’ icon (three horizontal lines) in the top left corner of the screen.
- From the menu, select ‘Blocked numbers’.
- You will see a list of all the numbers you have blocked. To unblock a number, tap on the ‘Unblock’ button next to the number you wish to unblock.
“Should I Answer?” is an effective tool for managing your calls and ensuring that you only receive calls from people you want to hear from. As with other similar apps, you’ll need to give “Should I Answer?” permission to access your call logs and contacts for it to function effectively.
6. Calls Blacklist
Calls Blacklist is a simple yet effective call and SMS blocking app. It allows you to create a blacklist of unwanted numbers, and you can also block calls and messages from unknown numbers. The app is user-friendly and doesn’t consume much power or memory.
Here’s how you can use Calls Blacklist to unblock numbers:
- Open the Calls Blacklist app on your Android device.
- Tap on the ‘Blacklist’ icon at the bottom of the screen.
- You will see a list of all the numbers you have blocked. To unblock a number, tap on the ‘minus’ symbol next to the number you wish to unblock.
Calls Blacklist is a great tool for managing your calls and ensuring that you’re not disturbed by unwanted calls or messages. As with other similar apps, you’ll need to give Calls Blacklist permission to access your call logs and contacts for it to function effectively.
7. Avast Mobile Security & Antivirus
Avast Mobile Security & Antivirus is a comprehensive security app that protects your Android device from viruses, malware, and other threats. In addition to its robust antivirus features, Avast also offers call blocking features that allow you to manage your calls effectively.
Here’s how you can use Avast Mobile Security & Antivirus to unblock numbers:
- Open the Avast Mobile Security & Antivirus app on your Android device.
- Tap on the ‘Privacy’ tab at the bottom of the screen.
- From the menu, select ‘Call Blocker’.
- You will see a list of all the numbers you have blocked. To unblock a number, tap on the ‘Unblock’ button next to the number you wish to unblock.
Avast Mobile Security & Antivirus is a powerful tool for managing your calls and ensuring that your device is protected from threats. As with other similar apps, you’ll need to give Avast permission to access your call logs and contacts for it to function effectively.
How to Block or Unblock a Phone Number on Android
Ever been bothered by a persistent telemarketer or simply want to avoid calls from a specific number? Your Android phone has got you covered. Here’s how you can take control and block or unblock phone numbers.
Block a Phone Number
- Open the ‘Phone’ app on your device.
- Tap ‘More’ (usually represented by three dots) and then ‘Call history.’
- Find the call from the number you want to block and tap it.
- Select ‘Block / report spam.’ Voila! No more calls from that number.
Note: If you have visual voicemail on, the blocked number won’t be able to leave voicemails.
Block Unknown Numbers
- Open the ‘Phone’ app.
- Tap ‘More,’ then ‘Settings,’ and then ‘Blocked numbers.’
- Turn on ‘Unknown.’ This blocks calls from private or unidentified numbers, but you’ll still get calls from numbers not in your contacts.
Unblock a Phone Number
- Open the ‘Phone’ app.
- Tap ‘More,’ then ‘Settings,’ and then ‘Blocked numbers.’
- Next to the number you want to unblock, tap ‘Clear,’ and then ‘Unblock.’
Important: These steps may vary slightly depending on your Android version and are generally applicable to Android 6.0 and up. Check your Android version if you face any issues.
Remember: Any calls you received from the number while it was blocked won’t appear in your call history. It’s like they never even happened!
Now you have the power to control who can reach you and who can’t.
How to Unblock Contacts from the Phone by Google App
Got a number blocked on your Android phone and want to unblock it? If you’re using the Phone by Google app, which is the go-to dialer for many Android devices, you’re in luck. The process is as simple as a few taps, and you’ll be back in touch with that contact in no time. Here’s how to do it:
- Locate the Phone app on your home screen or app drawer. It’s the one by Google, and it’s likely your default dialer.
- Tap the ‘More’ icon, represented by three dots, to open up the Settings menu. It’s where all the magic happens!
- From the options that appear, tap ‘Settings.’ Then, make your way to the ‘Blocked numbers’ option. You’re almost there!
- See the red dash next to the number you want to unblock? Tap it. That’s it! The number is now unblocked.
- Optional – Download the App: Don’t have the Phone by Google app? No worries! You can download it from the Play Store and make it your default dialer for most Android phones.
Note: The exact steps might vary slightly depending on your phone’s model and the version of the app. If you run into any trouble, a quick search online with your phone’s model should set you on the right path.
So, whether it’s a friend you accidentally blocked or a business contact you need to restore, unblocking a number using the Phone by Google app is a breeze.
How to Unblock Contacts from the Google Contacts App
Accidentally blocked someone in your Contacts app on your Android phone? Or perhaps you’ve had a change of heart and want to unblock a number? No problem! Google’s Contacts app makes it easy to unblock contacts, whether they’re saved or unknown numbers. Here’s how to do it:
- Tap the Google Contacts app on your device. If you don’t have it, you can grab it from the Play Store.
- Look for the ‘Fix & manage’ tab. It’s usually in the lower-right corner of the screen. Tap it!
- In the ‘Other tools’ section, you’ll find ‘Blocked numbers.’ That’s where you want to go.
- See the red dash next to the number you want to unblock? Give it a tap, and the number is unblocked. Easy, right?
Important Note: If the number tried to contact you while it was blocked, those calls are gone for good. Android doesn’t keep a log of calls from blocked numbers, so you won’t see any missed calls from that number after you unblock it.
So there you have it! With just a few taps, you can unblock contacts in the Google Contacts app. Whether it’s reconnecting with an old friend or unblocking a business contact, you now have the power to control who can reach you.
How to Unblock Contacts from the Google Messages App
So, you’ve blocked a contact from sending you text messages, but now you want to unblock them? No worries! Whether it’s a friend you’ve made amends with or a business contact you need to hear from, unblocking a contact in the Google Messages app is a breeze. Here’s how to do it:
- Tap the Google Messages app on your device. It’s where all your text messages live.
- Tap the ‘More options’ icon, represented by three dots. Then, select ‘Spam and blocked’ from the options that appear.
- Find the message (and sender) you want to unblock and tap it.
- A pop-up dialog box will appear in the upper-right corner of the screen. Tap ‘Unblock,’ and you’re done!
- Want to see all your blocked contacts, including those from the Phone or Contacts app? On the ‘Spam and unblocked’ page, tap the three-dot icon and select ‘Blocked contacts.’
Important Note: The steps above are for Google’s preinstalled apps on most Android devices. If you have a different phone with third-party apps, the process might be slightly different, but it’s usually quite similar.
So go ahead, reconnect with those contacts and let the text messages flow again. It’s as simple as a few taps, and you’re back in touch.
How to Remove a Phone Number from the Block List on Your Android Phone
- Tap the ‘Phone’ app on your device. It’s where all your calling action happens.
- Tap ‘More,’ usually represented by three dots, then ‘Settings.’ You’re getting closer!
- Select ‘Blocked numbers.’ Here’s where all those blocked numbers are hiding.
- Find the number you want to unblock and tap the ‘remove’ or ‘unblock’ option next to it. Done!
That’s it! In just a few simple steps, you’ve removed a number from the block list on your Android phone. Now you can receive calls and messages from that number again.
How to Unblock Numbers via the Phone App on Android
- Tap the ‘Phone’ app on your Android device.
- Tap ‘More,’ usually represented by three dots, then select ‘Settings.’
- Select ‘Blocked numbers.’ You’ll see a list of all the numbers you’ve blocked.
- Find the number you want to unblock and tap the ‘unblock’ or ‘remove’ option next to it.
That’s all there is to it! In just a few simple steps, you’ve unblocked a number via the Phone app on your Android phone. Now that number can call and message you again.
How Do I Unblock a Number on a Landline
Unblocking a number on a landline can vary depending on the service provider and the type of phone system you have. Here’s a general guide that might help, but it’s always best to consult your service provider’s customer support or your phone’s manual for specific instructions:
- Access Call Blocking Feature: On many landline phones, you can access the call blocking feature by pressing a specific code, such as *60. You may hear a recorded message guiding you through the options.
- Navigate to the Blocked Numbers: Listen to the instructions, and you may be prompted to press a certain number to hear your list of blocked numbers or to manage blocked numbers.
- Select the Number to Unblock: You may be given the option to unblock a specific number or all blocked numbers. Follow the prompts to select the number you wish to unblock.
- Confirm the Action: You may need to confirm your choice to unblock the number. Listen to the instructions carefully and follow the prompts.
- End the Call: Hang up to exit the call blocking feature.
- Consult Your Manual or Customer Support: If you’re unsure of the process, consult the manual that came with your landline phone or contact your service provider’s customer support. They can provide instructions specific to your phone model and service.
Please note that the exact process can vary widely depending on the phone system and the service provider, so it’s always best to consult the specific instructions that apply to your situation.
How Do I Unblock Numbers from my Infinix Hot 4
Unblocking numbers on an Infinix Hot 4 or similar Android devices is usually a straightforward process. Here’s a general guide to help you unblock numbers, but please note that the exact steps might vary slightly depending on the specific software version and any customizations made by Infinix:
- Open the Phone App: Tap the ‘Phone’ app icon on your Infinix Hot 4.
- Access the Settings: Tap the ‘More’ option, usually represented by three dots in the upper-right corner of the screen, then select ‘Settings.’
- Navigate to Call Blocking: Look for an option related to call blocking, such as ‘Blocked numbers,’ ‘Call blocking,’ or ‘Call rejection.’
- View Blocked Numbers: You should see a list of blocked numbers. Find the number you want to unblock.
- Unblock the Number: Tap the ‘unblock’ option or the ‘minus’ symbol next to the number you want to unblock. Confirm if prompted.
- Check the Success: The number should now be removed from the blocked list, and you should be able to receive calls and messages from that number again.
If these steps don’t match your device or if you encounter any difficulties, it might be helpful to consult the user manual that came with your Infinix Hot 4 or contact Infinix’s customer support for assistance specific to your device model.
How Do I Unblock a Text
Unblocking a text message usually involves unblocking the phone number that sent the text. Here’s a general guide to unblocking texts on an Android device, but please note that the exact steps might vary depending on your specific phone model and the messaging app you’re using:
- Open the Messages App: Tap the ‘Messages’ app icon on your device.
- Access the Settings: Tap the ‘More’ option, usually represented by three dots in the upper-right corner of the screen, then select ‘Settings.’
- Navigate to Blocked Contacts: Look for an option related to blocked contacts, such as ‘Spam and blocked,’ ‘Blocked numbers,’ or ‘Call blocking.’
- View Blocked Numbers: You should see a list of blocked numbers. Find the number whose texts you want to unblock.
- Unblock the Number: Tap the ‘unblock’ option or the ‘minus’ symbol next to the number you want to unblock. Confirm if prompted.
- Check the Success: The number should now be removed from the blocked list, and you should be able to receive texts from that number again.
If you’re using an iPhone or a different messaging app, the process might be slightly different. In that case, it might be helpful to consult the user manual that came with your device, the help section within the messaging app, or the customer support for your device or app.
How to Contacting Your Carrier for Assistance
In addition to using your phone’s settings or third-party apps, you can also contact your mobile carrier for assistance in unblocking numbers. Many carriers provide services to manage calls, including blocking and unblocking numbers. This can be particularly useful if you’re receiving unwanted calls from telemarketers or other businesses.
Here’s a brief overview of how some major carriers can assist in unblocking numbers:
- Verizon: Verizon allows you to block and unblock numbers through their website or mobile app. You can log in to your account, navigate to ‘My Verizon’, then ‘My Account’, and finally ‘Manage Blocks’. Here, you can add or remove numbers from your block list.
- AT&T: AT&T provides a service called AT&T Call Protect. You can manage your block list through the AT&T Call Protect app or through your online account. To unblock a number, navigate to the ‘Blocked Numbers’ section and remove the number from the list.
- T-Mobile: T-Mobile offers a service called Scam Shield that allows you to manage blocked numbers. You can access this feature through the Scam Shield app or your online account. To unblock a number, go to the ‘Blocklist’ and remove the number.
- Sprint: Sprint customers can manage blocked numbers through their online account. After logging in, navigate to ‘My Preferences’, then ‘Limits and Permissions’, and finally ‘Block Voice’. Here, you can add or remove numbers from your block list.
Remember, the specific steps may vary depending on your carrier and their current services. If you’re unsure, it’s best to contact your carrier’s customer service for the most accurate information.
Common Issues and Troubleshooting
Unblocking a number on your Android device is typically a straightforward process. However, like any tech-related task, you might encounter some issues. Here are a few common problems and their solutions:
- Blocked Number Still Appears to be Blocked: Sometimes, even after you’ve unblocked a number, you might still not receive calls or messages from it. This could be due to a glitch in your phone’s software. Try restarting your phone and see if the problem persists. If it does, you might need to unblock the number again.
- Can’t Find the Blocked Numbers List: The location of the blocked numbers list can vary depending on your device and its operating system. If you can’t find it, try looking in the settings of your Phone app or the settings of your device. You can also refer to the user manual of your device or search online for specific instructions for your device model.
- Number Not on the Blocked List: If a number you want to unblock isn’t on the blocked list, it’s possible that it’s being blocked by your carrier or a third-party app. Check any call-blocking apps you have installed, and consider contacting your carrier to see if they’re blocking the number.
- Blocked Number Still Able to Leave Voicemails: Even when a number is blocked, it might still be able to leave voicemails. This is because the blocking feature typically just silences the call from your end; it doesn’t prevent the caller from reaching your voicemail. If you don’t want to receive voicemails from a blocked number, you might need to contact your carrier for assistance.
Remember, if you’re having trouble unblocking a number, there’s always help available. You can contact your device manufacturer’s customer service, your carrier, or a tech-savvy friend. Don’t hesitate to ask for help if you need it!
Conclusion
Unblocking a number on your Android device doesn’t have to be a daunting task. Whether you’re using the built-in settings of your phone, a third-party app, or seeking assistance from your carrier, there are multiple ways to regain contact with a previously blocked number.
Remember, it’s essential to manage your calls effectively to ensure that you’re only receiving the ones you want. Whether it’s a number you accidentally blocked or a contact you wish to restore communication with, the power is in your hands.
Don’t Miss Out:
- How to Unblock a Number on iPhone
- How to Block a Number on Android
- How to Block a Number on Landline Phone
- How to Block a Number on Samsung Phone
Frequently Asked Questions (FAQs)
No, once a call or message is blocked, it can’t be retrieved. After unblocking a number, you will only receive new calls or messages from that number.
Blocking a number on your phone doesn’t affect your online status or profile picture visibility on apps like WhatsApp or Facebook. You’ll need to block them on those apps separately.
Try restarting your phone. If the problem persists, the issue might be with your carrier or the caller’s carrier. Contact your carrier for assistance.
Yes, numbers can sometimes be blocked by carriers or third-party apps due to suspected spam activity. You can still unblock these numbers using the same methods described in this guide.
No, the other person won’t receive any notification when you unblock them. They will only know if they try to call or message you again and it gets through.