I bought a Storm from ebay from a canadian seller. Its a bell mobility brand blackberry storm. I unlocked the device but not through the mepd method. when i inserted my tmobile sim, the device automatically asked for unlocked code so i entered it first time, then it asked for mep code so i entered the same code i used 1st time. then phone unlocked, and tmobile appeared on screen, i attempted to make a call but it didnt ring on either end, then it made the number no longer in service beep before displaying "call failed" message. From then on it says SOS Signal in top right corner. My sim card works in my tmobile sidekick but not storm. How can I correct this issue?