I have 8+ years experiance of SIM card industury. My experiance is in GSM & CDMA technology as SIM, USIM, RUIM, 2G & 3G networks. I have working experiance with all operators available in ***** & nearby countries. also have good knowledge & experiance of testing of applications like STK, DSTK, WIB, Celltick, Roaming etc & onsite & offsite testing & support.