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
How do I temporarily turn off ATT call notes
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!
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.