I had the same problem and I fixed it. I just opened the iphone because my wifi no longer works. When I closed it up well the place were you hear the calls did not work anymore. Well the trick is to make sure your connector 3 is well put back in place. It is the orange flabby one behind the number 2. Before you pop the 2 back into place you need to put the 3 in. Lift the white tab on the logic board. It might be already lifted and then insert the 3 into it. Like putting a piece of stick gum inside your mouth. Then close the white switch back down and it should lock the 3 into place. Then proceed with the 2 and then 1. This will surely fix the issue.
To have a better view on this connection I have removed the metal plate covering the back of the glass. Its a thin piece of metal held by 9 screws. To unscrew the 8 screws you need the screwdriver head with 3 sides like the Mercedes Benz symbole. The last is with a phillips near the camera.
I recently had issues with removing the glass with the suction cup. I have done this many times with older generation iPhones but this time the glass seemed sealed on quite solidly. I told myself that the last option would be to use the screwdriver tip. After all my attempts, I transitioned to the option of using the screwdriver tip. Surprisingly, it was the easiest thing ever. I placed the 1mm flathead screwdriver at the interface between the glass and the cover (normal start location) and pried up very gently. Voila, the glass came up and I can’t even notice any dents or scratches. It felt much easier than the suction cup technique. If the suction cup is giving you a hard time consider using that 1mm flathead.
To have a better view on this connection I have removed the metal plate covering the back of the glass. Its a thin piece of metal held by 9 screws. To unscrew the 8 screws you need the screwdriver head with 3 sides like the Mercedes Benz symbole. The last is with a phillips near the camera.
The stove top works well also. Remember, as the main instructions say, it should be slightly too hot to touch comfortably.
I recently had issues with removing the glass with the suction cup. I have done this many times with older generation iPhones but this time the glass seemed sealed on quite solidly. I told myself that the last option would be to use the screwdriver tip. After all my attempts, I transitioned to the option of using the screwdriver tip. Surprisingly, it was the easiest thing ever. I placed the 1mm flathead screwdriver at the interface between the glass and the cover (normal start location) and pried up very gently. Voila, the glass came up and I can’t even notice any dents or scratches. It felt much easier than the suction cup technique. If the suction cup is giving you a hard time consider using that 1mm flathead.