No(/poor(one bar)) Service - Wifi works - What to do?
I recently bought a second-hand iPhone 3GS 32GB Black. It's without an unlock so all simcards should work.
Nevertheless, no simcard works, the iPhone keeps saying 'No service' most of the time and occasionally I have one bar.
I tried different simcards. Didn't work.
I tried another iPhone 3GS with the same sim on the same locations and this one has perfect service.
I tried updating to the newest (4.3.5) firmware. Didn't work.
I tried a full reset. Didn't work.
I tried resetting the network configurations. Didn't work.
Could you guys please help me?
I've been searching the internet for hours and hours but no solution yet.
when this happens it's either the sim reader is the problem..ie it doesn't recognise the chip on the sims..try blowing gently into the simslot or opening the phone using any guide to the right under the photo (turn phone off first or you risk damaging the backlight) try cleaning the slot with a qtip to remove dust and grease, check that the gold pins are all there and not broken or flattened.if they are too flat then gently lift them up to about 45degrees.
You may find that you have the sim recognised, 1 bar of signal but if you try to call on the phone or you ring the phone no connection/hang
ps just because it has been "unlocked" doesn't mean it isn't blocked..