i hav 3 options to choose from wcdma, gsm and gsm/wcdma.. but wen i choose gsm/wcdma my calls jus get cut in between and the sim prepares it self everytime but i do get H or 3G on gsm/wcdma. But if i use only gsm my calls are smooth but i get onle EDGE network for my internet. And i am not sure if i can use only wcdma for calls..? although wen i use only wcdma network i do get H or 3G network for internet. Please let me know if i can use wcdma..??