40404
It depends on the plan you have. Check your contract agreement.
Dial #31# before the phone number
If your phone plan includes mobile to mobile calling it does. If you're using prepaid it generally won't unless your on the $1 a day mobile to mobile plan.
call AT&T and provide them the imei #
Verizon wireless, Sprint, and ATT
Att is a Internet , Cable , and Home phone company. There is no 1 thing that att does
Yes, you can flash a Verizon phone to ATT. However, you will also need to insert a Verizon SIM card into the ATT phone in order for it to properly work.
Yes, provided your ATT phone is SIM unlocked.
no
I that happened you would probably have to call att and the could probably do something because I am pretty sure you can transfer money from accounts if yo call. Hope this helps!
How do I temporarily turn off ATT call notes
According to my knowledge, you can usually call them. Just look up their phone number. You can also email them. I think you can also come to their Att store? The fastest way to contact them (from past experience) is through phone.