I had this issue for about 1 month & i went through everything- Googling,yahoo search & apple discussion. At last I have fixed my iPhone4 in 5 min. First of all u need to know if it a software or hardware issue- 1. Toggle airplane mode for 4 seconds & wait for network. 2. Reboot iPhone. 3. Network reset. 4. Manually choose network. 5. Hardware repair method- (Switch off your iPhone & take out the sim tray before continuing) Take out the 2 screws from the bottom near the speaker mesh. Slide up the back panel & take it off. Now take off the battery by taking off the little screw on the battery terminal. You will find a very thin black wire near the battery terminal with a small plate on its end. Near the terminal stand u will find a place to fit the plate. First clean the plate with a cotton cloth gently. Connect plate on its place it & press it a little till u hear the little sound- tick. (*Remember not to press so hard*) Connect the battery & put the screw back. Get the back panel again & put the bottom...

iPhone no service error 100% fix in 5 minutes I had this issue for about 1 month & i went through everything- Googling,yahoo search & apple discussion. At last I have fixed my iPhone4 in 5 min. First of all u need to know if it a software or hardware issue- 1. Toggle airplane mode for 4 seconds & wait for network. 2. Reboot iPhone. 3. Network reset. 4. Manually choose network. 5. Hardware repair method- (Switch off your iPhone & take out the sim tray before continuing) Take out the 2 screws from the bottom near the speaker mesh. Slide up the back panel & take it off. Now take off the battery by taking off the little screw on the battery terminal. You will find a very thin black wire near the battery terminal with a small plate on its end. Near the terminal stand u will find a place to fit the plate. First clean the plate with a cotton cloth gently. Connect plate on its place it & press it a little till u hear the little sound- tick. (*Remember not to press so hard*) Connect the battery & put the screw...