Is there a service charge for needing to change my mobile number? During the activation process somehow I was assigned a number with a 423 area code.

I am trying to buy an at&t prepaid refill card using an AT&T gift card, but it's telling me that my card number is not valid even though it is

I have had four phones on a family plan for several years. This summer (2020) two of the phones could not get calls. The phones are on a pay as you go

I just bought an AT&T prepaid phone today. My phone says invalid card in the top left corner of the screen? When I take it out and put it back in

Or changing my number.

2 weeks ago, I just have arrived US from south Korea with my phone(samsung note 20 ultra) bought from Korea. I got the 75$ prepaid sim of AT&T, bu

My data plan is an auto renew unlimited data that was working stable on my ZTE MF279. Last week changed the SIM to a Netgear Nighthawk M1 and last nig

Under the 'about phone' menu in settings of Andriod 10 OS my phone number is displayed as 'unknown'. Also under SIM settings the number is not display

I lost my refill card with my pin on it I have the receipt but it does not have my pin on it I purchased this at an allsups convenience store. How can

I am in the US. I have an old flip phone and I have a friend in Dominican Republic that needs a phone. Would he be able to get a new card and use the