Q: i have carrier problems ! please help me , please contact me back !

Sorry, burt we are all users here, just like you, and Apple can't be reached by posing here.

If you are willing to give us more details, maybe we can help.

In case you are having problems with your SIM, check these articles:

If you see 'No SIM' alert on iPhone

If you see No Service in the status bar of your iPhone or iPad - Apple Support