Why is my AT&T phone not working?

well my sister had this phone & she had took the sim card out of this phone & put it & another phone that she had got from my cousin house so i took the phone she had in i had got the chip from my cousin phone & i put it in my sister...

can anyone tell me what i should do with this situation ... okay yesterday i went to target to get a phone and i got a ATT go phone .. okay now it was working fine yesterday until ...show more

Okay, so I have a cricket phone and I have dropped it a few times before. Today I was over my fiances house and I dropped my phone on the hard wood floor like three times because it kept slipping out of my hand. After it dropped my fiancee' had to be...

I called your phone number and I get garbage. No one picks up phone. WHy don't you get out of business. You are prime candidate for bancruptcy.

I am getting no dial tone from this phone but the phone line is working, I can phone the landline number and it will ring, but when I pick the call up I can hear nothing. This is driving me nuts

I cannot use my phone certain parts of the day (usually (almost everyday) at night) and the time it doesn't work is not the same every day. Internet always working. Internet and phone through shoreham telephone. Internet is dsl/broadband, so I am confused...

I was walking along a street I go on often, coming out of the library where there's no signal. And when I was a block or so away from the library, I looked at my phone and it said there wasn't signal. It was like this until I got home, turned my phone...

Yesterday I got a smart talk phone for $80.00 from Walmart. I activated it and it was working fine letting me make calls and text people from home. But once I leave my house I can't call or text anyone out in the public. Why is that? Can you only use...

My phone has suddenly stopped working. It kinda happened over a one day time frame when my family rented this new vehicle to take on vacation. I somehow think recharging my phone in the car spiked my phone in some way cause after I unplugged it, it still...