I currently use an Xfinity-locked iPhone 7 plus with an r-sim in the UK.
Before I changed a carrier, everything worked perfectly and had no issue.
However, after changing a carrier and inserting a new sim with a new number, sending texts has become so random; sometimes sent, sometimes not delivered.
Other things are working perfectly fine including data, call and receiving texts.
So I googled that figured out that the problem was that service center address was wrong, it was 88.
I finally found the right number for my carrier, and it seemed to resolve the issue.
But it keeps failing sending texts often, and the service center address turned back to 88.
I can still send a text when I find 88 again then change to the right number,
but I have no idea what it keeps changing like this and it is kinda annoying.
It would be much appreciated if someone who has any experiences like this issue tells me what is the cause and how to resolve it.
Before I changed a carrier, everything worked perfectly and had no issue.
However, after changing a carrier and inserting a new sim with a new number, sending texts has become so random; sometimes sent, sometimes not delivered.
Other things are working perfectly fine including data, call and receiving texts.
So I googled that figured out that the problem was that service center address was wrong, it was 88.
I finally found the right number for my carrier, and it seemed to resolve the issue.
But it keeps failing sending texts often, and the service center address turned back to 88.
I can still send a text when I find 88 again then change to the right number,
but I have no idea what it keeps changing like this and it is kinda annoying.
It would be much appreciated if someone who has any experiences like this issue tells me what is the cause and how to resolve it.