I bought a unlocked 8310 BB on eBai . The i'm using a T-Mobile SIM Card. The signal is always unstable. The edge letters on the side of signal bar are not CAPITAL letters. The cell phone goes on searching for network, every minute!! the sim works perfectly in other cellphones. What could be happening???
OK, but it is not the area. It makes it everywhere , the SIM CARD works well in other cellphones same areas!!! I says T-MOBILE, then every minute it goes on searching for network or SOS.