When it comes to iPhone repair, the most problematic issue faced by the users is how to replace the screen of the gizmo. If you have found some defects in your iPhone and the warranty period is over, before taking resort to a professional service company, you can try your own hand on repairing the same. But be extra-cautious while doing the same as iPhone 4 replacement screen and other issues need to be handled by professionals only. Before you take up the task, you need to ensure that you have enough time in hand, have a roomy space to work in and a new screen at your disposal. Apple iPhone 3GS repair is equally complex a process. But here in this article, we will only focus on how to replace a worn out screen of an Apple iPhone 4.

Step-by-Step Replacement Guide
Prerequisites
The tools and other things that are needed for the Apple iPhone 4 repairing are one Philips screwdriver, one case opener, one pin to extricate the SIM slot and one new screen that you need to buy from a local store beforehand. You need to wash and wipe your hands thoroughly before you start your work.

Disassembling the Phone
First, you need to completely dismantle the phone and segregate all the parts of the phone. Have some small piece of papers and use them to label all the parts respectively. The screws should be labeled with minute details. You should label aluminum back case, metal back screws and motherboard screws separately. Lay all the parts in a sequential manner so that when you again form the phone, you can exactly follow the opposite way.

Removing SIM Slot
Removing SIM slot is a very important step towards iPhone 4 replacement screen task. You can do this by slotting in a large pin from the topside of the phone. The SIM slot can be ejected this way quite easily. Make use of the case opener to extricate the plastic back cover of the phone. Keep these things properly in a categorized and disciplined manner.

Removing the screws
Remove the screws from all sides with the help of the screw driver. There are two on both sides, one on the top and one in the middle. Labeling all these screws properly is extremely important, as previously mentioned. Now make use of the case opener to eject the backside from the iPhone frame.

Removing the antenna
You should be extremely cautious while removing the antenna cable of the phone. This part is attached to the phone with glue. You need to carefully detach the same from the phone. Following this, you still need to extricate the screws from different sides. Make good use of the screw driver. Label these screws as ‘Outside Case screws’. Three motherboard screws have to be ejected thereafter.

Slowly loosen the three sides of the present screen thereafter and open it. Replace it with the new screen you have bought. Alternatively, you can take help from a professional iPhone 3gs repair company who expertise screen replacement of iPhone 4 devices as well.
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