Dial #31# before the phone number
40404
It depends on the plan you have. Check your contract agreement.
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
If you mean permanently, you will probably have to call your cell phone provider and talk to them. Because unfortunately you can get anyone's cell phone number off the internet. If you just want to block your number for a specific person you have to do that individually and with your phone and that varies with each cell phone. You will either have to call your cell phone provider and figure out how to do that with your specific phone or find your instruction booklet.
Att is a Internet , Cable , and Home phone company. There is no 1 thing that att does
ATT offers two different types of phone plans. The ATT phone plans include standard and prepaid. The standard type of ATT phone plan is available on all ATT cell phones. For the standard plan, you must buy a phone with a two year contract and make monthly payments. With a standard plan, you can choose unlimited or pay for the number of minutes you want a month. The prepaid ATT phone plan is for the GoPhone. You pay for your minutes, messaging, and web until they run out. This plan is best for people not on their phones too much.
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
The easiest option would be to go to an AT&T corporate location with both phones and have the use the UME or universal memory exchanger to transfer contacts. Call customer care at 800-331-0500 for the nearest store and call the store to make sure they have a UME.