Do Blocked Numbers Transfer To A New Phone?

Every once in a while you may have to block an unknown or spam number, adding them to your blocked list. But what happens if you have to change your phone or mobile number? Do blocked your numbers transfer to the new phone?

In most cases, blocked numbers will not transfer to a new phone. The numbers are saved to mobile storage memory and are not transferred to a new phone even when using the same SIM card. Some applications, however, do allow your blocklist to transfer over to a new device.  

Since the blocked numbers are stored in your phone’s internal storage, changing the SIM card will not unblock those numbers.

Do blocked numbers carry over to a new phone?

Blocked numbers generally won’t carry over to a new phone as the blocking feature is specific to your device. Unless you use a third-party calling app or your device implements Android’s number blocking API, you will need to re-block all the numbers on your new device manually.

Your SIM card doesn’t store the numbers you block. These are saved in your device’s storage memory, independently of the SIM and number associated with the device.

It’s worth noting that the Android development platform provides a content provider API known as ‘BlockNumberProvider’ for implementing blocked numbers in a cross-device manner.

With number blocking implemented using this API, blocked numbers are persisted across Android platforms, so blocked numbers do transfer to a new device.

However, this API isn’t commonly used, and number blocking is generally implemented at the app level, making blocklists local to the device and non-transferrable to a new device.

Social media number blocking

If you block a contact on an IM or social media app such as WhatsApp, Facebook, Instagram etc, a contact will remain blocked on that social media app even if you switch to a new device, since blocked numbers are stored in the cloud.

Also, if you are using a third-party contact management or caller ID app such as Truecaller for blocking a number, that number will remain blocked if you use the same app and account on a new device.

Number blocking in Google Phone

If you are using Google Phone as the default dialer app, as is the case on Pixel and AndroidOne devices, your blocked number list will be stored in your Google account.

As a result, when switching to a new device, you can easily restore your blocklist to the new device by selecting ‘Restore‘ from your Google account.

Does changing phone unblock numbers?

Changing your phone will unblock the numbers that you blocked. The blocked numbers are stored in the device storage and the blocklist does not transfer to a new device when using the backup & restore method.

Since the blocklist is stored on the device storage as opposed to the SIM card, changing the phone with the same SIM card will unblock the numbers that you blocked on your previous device.

Will a Galaxy phone transfer your blocklist if you keep the same number but switch phones?

A Galaxy phone will not transfer your blocklist even if you keep the same number while switching phones, because the blocklist is not saved on your SIM card. It is non-exportable data stored in your Galaxy device.

The blocklist contains the numbers that you explicitly block and that may or may not be saved in your phone’s contacts.

Since this information is not saved as a part of your Contact app’s data, it is also excluded from the backup that can be exported to your new device.

What happens to blocked contacts when you change your number?

The blocked contacts and numbers remain blocked when you change your phone number. That’s because block numbers are stored in the device’s storage memory and changing your SIM card does not affect the blocklist.

If you change your number on an IM app such as WhatsApp on the same phone, the blocked contacts on that app will also remain blocked unless you explicitly unblock them.

These blocked contacts will not be notified that you changed your phone number on the IM app.

Are blocked numbers blocked from your number or your phone?

Number blocking is most commonly implemented on your device, meaning blocked numbers are stored in your device, not on the SIM card. 

Blocked numbers can always place a call or send a message to your number via your network carrier, but your Android device will block/hide these calls and messages.

A blocked number will be able to contact you if you insert the same SIM card in a different device.

If you want to block a number from your SIM card or phone number, you can ask your mobile service provider to block the number from your SIM card – using network-based blocking.

If a number is blocked through the network, the number will remain blocked even if you switch to a new device (using the same SIM card) since the blocking is based on your mobile number.

Network-based blocking, however, isn’t common, and your network carrier may or may not offer this service. If not, you’re limited to standard software-based blocking.

Again, software-based blocking means blocking a number using your device’s built-in features. As explained, numbers blocked this way are local to the device.

Do blocked phone numbers expire if my number is reassigned to another user?

Blocked phone numbers do not expire if your number is reassigned to a new user because the blocked contacts are not associated with your phone number. 

However, blocked numbers will be deleted if you format and reset your Android device.

If you block a number on an IM app such as WhatsApp, on the other hand, if the phone number is reassigned to another user, the number will be unblocked. 

In this case, reassigning a phone number to a new user means that a new account is created on a phone number that you might have previously been used on WhatsApp. If you change your WhatsApp to a new number, your old number may be reassigned to a new account or user.

How can you block someone if they keep changing their number?

You cannot block someone if they keep changing their number because there is no way to track all the numbers associated with that user. You can only stop them by manually blocking all the numbers they contact you with.

A spam caller may mask their number with a different number using a phone number masking app.

A masking app allows a user to use a secondary number by masking their phone number. The user can place calls with their original SIM card, but the caller id will be changed.

Are blocked numbers saved on SIM cards?

Blocked numbers aren’t saved on the SIM card, they are most commonly stored on the device where they were blocked. 

Number blocking most frequently use app features on the device, which store blocked contacts on the device itself. Exceptions are third party caller apps which store blocked contacts in the cloud.

The SIM card or phone number does not carry the blocklist, and a block number may contact you if you use your SIM card on a different device.

Will my blocked numbers/contacts change when I move my SIM card from one phone to another?

The blocked numbers are independent of the SIM card so moving the SIM card will not change the blocked numbers on your former device, and will not add your current blocklist to your new device. 

That said, you may find a different blocklist on the new phone to which you move your SIM card, depending on the numbers that were blocked on the new device (if it hasn’t been reset). 

The blocklist is saved to the device storage and is independent of the SIM card you are using. Changing the SIM card or moving your SIM card to a different device will not affect the blocked numbers.

Will I be able to receive any messages or calls from a blocked number if I change my SIM card to another number?

Changing your SIM card to another number will not affect blocked numbers on your device. You will not be able to receive any messages or calls from a blocked number even if you change your SIM card.

The blocked numbers list is generally saved to your device storage and is dependent on the device you use.

See also: Why Am I Getting Text Messages From A Blocked Number?

Do the blocked contacts on WhatsApp transfer to a new phone?

Blocked contacts on WhatsApp will transfer to a new phone if you use the same Whatsapp account on your new phone. 

You must restore your existing Whatsapp account on the new device using a Whatsapp backup stored in your Google drive.

In order to keep your blocked contacts, make sure you don’t delete your Whatsapp account before migrating it to your new device. You must first back up your WhatsApp on your old device before restoring it to the new device:

Backup WhatsApp on your existing device

To backup your WhatsApp chats:

  1. Open your WhatsApp > tap on the three dots on the upper-right corner > ‘Settings’
  1. Tap ‘Chats’ > ‘Chat backup’
  1. Select a backup location by tapping ‘Google account’
  1. Tap ‘Backup’ and wait for the backup to complete

Your WhatsApp will be backed up to your Google Drive.

To restore your WhatsApp account on your new device:

  1. Move your SIM card to your new phone
  2. Download and install WhatsApp from the Play Store on your new device
  3. Open the WhatsApp app > tap ‘Agree to continue’
  4. Select your country and enter your phone number
  5. Tap next. WhatsApp will verify your phone number
  1. Grant the necessary permissions
  1. WhatsApp will now automatically look for backup
  2. Select an account to restore data from and wait for restore to complete

Your WhatsApp chats and blocked contacts will be restored to your new device.

If you get a new phone, do the blocked contacts on WhatsApp stay blocked after installing WhatsApp and verifying the same number?

If you get a new phone, install WhatsApp on it, and verify the number, the blocked contacts on your WhatsApp will stay blocked. 

You need to backup your WhatsApp account to be able to verify and migrate it to the new device.

After verifying your number on WhatsApp on your new device, your device will look for backups on the device and Google Drive.

Whatsapp will restore your data on the new device from the Google Drive account you specify. The data includes chats as well as blocked contacts information, in addition to your account preferences.

If I delete and reinstall WhatsApp, will my blocked contacts still be blocked?

If you delete Whatsapp from your phone and then reinstall the app from Play Store, assuming your phone number hasn’t changed, your Whatsapp account will be restored including all your chats and your blocked contacts.

Do the blocked contacts in WhatsApp stay blocked when you change number?

If you change your phone number (new SIM card) on your phone, you will no longer have access to your old Whatsapp account, which is linked to your old phone number.

Therefore, you will no longer see your chats and Whatsapp contacts, including your blocked contacts. You will need to create a new Whatsapp account using your new phone number, add contacts to Whatsapp for the new account, and re-block your undesired contacts.

If, on the other hand, you change your Whatsapp number, all your blocked contact will remain blocked. The reason is that you simply verify a new phone number for an existing account, which remains unchanged.

How long does a blocked number stay blocked?

A blocked number stays blocked as long as you don’t unblock it or reset your device to factory settings.  A device will not automatically unblock a number or contact.

Does factory reset on your phone remove the blocked?

Performing a factory reset on your phone will remove the blocked numbers list from your device. Factory reset resets your device to its original state and removes all the data including app data, contact data, and all user data stored in your device storage, including your blocklist.

However, if you use a third-party dialer or caller ID app for number blocking, the blocked numbers will not be deleted with a factory reset. After the reset, you can log into your app account and retrieve the saved blocked numbers.

If someone has blocked you and you change the SIM card on the same phone, can you call the person?

If someone blocked you and you change your SIM card on the same device, you can call the person who blocked you. It is so because you are calling them from a different phone number which they have not blocked.

When someone blocks you, only your phone number is stored in their block numbers list, not your device information.

Likewise, a contact you block can always contact you using a different number on their device.

If I block someone from an Android and then switch to iOS, will their number still be blocked on the new phone?

If you block someone from an Android and then switch to iOS, their number will no longer be blocked on the new phone as blocked numbers are generally non-transferable.

Also, Android data, including blocked numbers, can’t be easily transferred to an iOS device.

If someone blocked me on their phone but change their number, will I still be blocked from their old number?

Blocked number are stored and managed locally on the device. You will still be blocked from their mobile device and will not be able to contact them on their new number. However, you will be able to contact them on their old number assuming they use it on a different device.