"No sim card installed" message after replacing screen and home button
Hi everybody. I see you have a solution for many problems so I’m really hoping you’ll be able to help me. Where do I start lol. I got an iphone 4 from a friend and the home button wasn’t working well, so i decided to replace it with a new one,but, after doing that, the new button wasn’t working at all, so I had to buy another one, i replaced that one, but while putting the phone together I damaged the touch screen digitizer lol so I replaced that as well and now finally the phone is working except for one problem. After asking tesco network for the unlock code i restored the iphone and now on the startup when i go through the steps it says "No SIM card installed. Insert a valid sim with no PIN lock to activate iPhone". Now I’ve seen many people had problems with the signal or the sim and they offer solutions, but because of all the things that happened inbetween i cant detirmine what exactly the problem is, if its the antenna or the motherboard, or installing the newest ios etc… hope you’ll be able to help me. Thanks
Hi, firstly I would recommend that u disassemble the whole phone. Be careful with the lcd, especially with the digitizer cable and also the display ic. I hope u have isopropyl alcohol with u. Take a q-tip and use isopropyl alcohol to clean all the metal parts. Do this very carefully. Take ur time. And finally reassemble. Second, to unlock ur phone from O2/Tesco u need to put another network sim for the unlock to work. Maybe all u need to do is use another sim and not open the phone up again. Hope this helped. Write back on what u did. Good luck.