Since the release of iOS 26 in September, iPhone users have experienced a myriad of problems. Whether it is the calendar bug that made it difficult to search for specific keywords or the fact that some users are not able to download Apple Intelligence, there have been some problems for Apple to happen again. However, it still seems that another bug has raised its head, and it has even more impact.
The bug is linked to Imessage, which is the instant messaging service with Apple iPhone, and has fueled a series of debates on the importance of blue bubbles and green bubbles. This particular bug, however, is linked to the phone number you use to register for Imessage.
According to Apple support documentsIt seems that some people have encountered in a problem where they are unable to activate Imessage using their phone number. This effectively prevents them from being able to use iMessage, by cutting them from the increased confidentiality of Apple which are integrated into the default iPhone.
What is the problem?
Apple says that this problem is probably caused by the system detecting an inactive SIM with the same telephone number located in the device you use. This can happen for a certain number of reasons, including, but without limiting yourself, the modification of telephone operators or simply having an old SIM card in your device after having passed to Esim on your mobile operator.
At this stage, the only solution is to remove this inactive SIM card. To do this, open the Parameters Application on your iPhone, then press CellularAnd from here, you will need to check if your phone displays two different sims using the same phone number. If you have several sims located in your cellular settings, you must delete the inactive.
If the inactive SIM card is a physical card, you will simply have to Remove it from your iPhone. However, if it’s an esim, you will have to type Delete esim To remove this inactive SIM card. Once you have done this, you should make sure that Imessage can be activated. Open your parameter application again, press Applications > Messages > Send & Receive. Now press the phone number you want to use to activate Imessage. If you continue to have problems with iMessage not operating after installing iOS 26, the solution could be more complicated. Fortunately, Apple also provides Other assistance documentsSo that you can dig and understand what is going on.
