Signal Eror in your iPHONE 3G????

1. Unlock with JailBreakTutor2.Use this tutorial N Unlock With Same NetworkSimTutorSuppose ur iphone have ORANGE,AT&T or O2 Network,before unlock insert same NCK SIM than do Unlock with procedure,after doing this insert sim any network, if still no signal use 3.4.5. Point3. reset network settings (phone will reboot) wait until phone reboot to normal mode4. remove simcard then re-insert simcard5.