falc0nfans
New member
ok so i jailbroke my iphone 4 on version 4.1 and my Modem Firmware is 02.10.04. i installed ultrasnow 1-1.1 or w.e(the latest one) to unlock my phone and i thought that by doin that my iphone would work with tmobile but it didnt, it keeps saying "Invalid Sim" when i put my tmobile simcard in. i reinstalled ultrasnow severeal times. iv turned off 3G network n i even went as far as to going to celluar data n going to da APN part n typing in (epc.tmobile.com) for my iphone to read my tmobile simcard but still it says "Invalid Simcard" idk what i did wrong or if it just cant work because my sim card works with my old tmobile phones but not the stupid iphone 4