Will I Be Able to Receive Messages or Calls from a Blocked Number After Changing My SIM Card?

When you change your SIM card to a new number, you might wonder about the status of a blocked number. This article will explore whether blocked numbers can still make contact, and how changing SIM cards affects such situations.

Understanding SIM Cards and Phone Numbers

SIM cards are designed to hold one thing: its number. When you insert a SIM card into a device, the phone number associated with that SIM is used to connect calls and messages. The primary function of a SIM card is to provide a means of communication for the device through which it is inserted. However, blocking a number requires specific actions on the phone or with the carrier, not on the SIM card itself.

Blocking a Number on a SIM Card vs. Phone

When you block a number on a phone, you instruct the device not to ring for that number and to block that number from appearing in the call log or message notifications. This does not affect the carrier's database, which is where the blocking is actually set. If you change your SIM card to a new number, the blocking you have set on your phone will remain, but the carrier’s database will not be aware of it unless you have specifically requested the carrier to block the number.

Switching SIM Cards and Blocked Numbers

Typically, if a number is blocked on your current SIM card and you switch to a new SIM card, you will not receive calls or messages from the blocked number on your new SIM card. This is because the blocking is specific to the phone number you were using. When you switch SIM cards, the block will not carry over to the new SIM card.

However, if you switch back to the old SIM card, you will still receive calls and messages from the blocked number unless you block that number on the new SIM card or request the carrier to update their records.

Storing Contacts on SIM Cards

Storing contacts on SIM cards can be convenient, but it is important to note that SIM cards do not have a built-in "block" option for contacts. If you have duplicates of a contact in your phone's memory, you can block the duplicate, but the SIM card itself does not retain or enforce this blocking.

Conclusion

When changing your SIM card to a new number, a previously blocked number will likely not be able to contact you unless the new SIM card has the blocking request applied to it or the carrier's database has been updated to reflect the block.

In summary, the blocking of a number is specific to the device or the carrier, and not dependent on the SIM card itself. If you need to ensure that a number does not reach you, it's best to set up blocking on the device or request the carrier to do so, especially when switching SIM cards.