Did you ask your new carrier to port your old phone number? It could be that your phone is using a temporary phone number issued by your new carrier until the old phone number comes over.
Anyone who knows your temporary phone number can ring you, but I suspect not many of your friends know it. Friends with Apple devices have another way to reach you -- via Facetime. Even though you have a "foreign" SIM in the phone, you are signed into iCloud with your same Apple ID. Apple users' phones don't care that the phone number is not working because they reach you via Apple ID over the internet and not through any cellular network.
When your phone number catches up with your new carrier, everyone will once again be able to reach you on that number.
Did you ask your new carrier to port your old phone number? It could be that your phone is using a temporary phone number issued by your new carrier until the old phone number comes over.
Anyone who knows your temporary phone number can ring you, but I suspect not many of your friends know it. Friends with Apple devices have another way to reach you -- via Facetime. Even though you have a "foreign" SIM in the phone, you are signed into iCloud with your same Apple ID. Apple users' phones don't care that the phone number is not working because they reach you via Apple ID over the internet and not through any cellular network.
When your phone number catches up with your new carrier, everyone will once again be able to reach you on that number.
Hello Chelavee1,
Thanks for using Apple Support Communities. It sounds like you’re unable to receive messages and calls after switching carriers. I suggest trying the steps in the article below:
If you can't make or receive calls on your iPhone - Apple Support
Should the issue persist, you’ll want to contact your wireless carrier to make sure that everything is provisioned correctly.
Take care.
I can only receive calls from people with other iPhones, I switched carriers the other day, could that be the reason?
