Why is my AT&T phone not working?

Im trying to see why my phone is not working right ?

• 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 phone in this phone that i got now it still wont work att all . sooo like whats wrong with itt ? it always says no service on the front of itt & when i look in the phone info . under phone number it doesnt have one & iasked my cousin did it have a phone number & she saidd yess , the sim card was activated . & it been turnt off for a month !

• Answer:

  Sometimes "getting over" doesn't always go so smoothly. I'm sure you don't want to hear this, but how much do you expect for free. Buy a phone. ~m~