Raina

As long as the display is intact and also can touch we can replace the glass screen instead of assembly, unless you display screen is broken, the assembly needs to be replaced. browse know more http://goo.gl/9c6P85

Your Samsung Galaxy s3 is still under warranty at this date? So if no one opened and tempered with your phone,or you did not drop it and the screen looks (seriously) damaged or bad contact, Then you can have the screen fixed ,i suggest you here http://goo.gl/Xc9NyU

May the first cause is wireless module is broken, or the WiFi antenna you get is no genuine one http://goo.gl/r4dXh1

Check any bad contact or you have to fix the camera follow the guide https://www.youtube.com/watch?v=5Sm4A08L...

The connection in battery is very different and battery capacity is also. See : http://goo.gl/5CILPj

You can refer to https://www.youtube.com/watch?v=B5hs--ZgYks

Here i saw the ipad 3 digitizer Adhesive you need.http://www.iboxfix.com/digitizer-adhesive-replacement-part-for-apple-ipad-3-wifi-version-a-grade-p-2626.html

First of all, you shouldn't forcibly set plug cable used in the process of transfer files, which this might damage the phone hardware And now you can try to change in charging cable or battery. Thirdly please make sure that the battery remaining power more than 80% before restoring the phone factory Settings, please backup your phone data (phone book, text messages, multimedia data, etc.) to : Settings - privacy - to restore factory Settings (excluding whether software caused by fault).

You can refer to our Headphone Jack Replacement, hope it can help you http://www.iboxfix.com/charging-port-flex-cable-ribbon-replacement-part-for-apple-iphone-5-black-p-126.html

Based on your description, it is recommended that you try to follow the following steps: 1. Clean the connecttion of the battery and the phone and see if corrupted(in this case will cause poor contact) 2. Remove the SD card and shut down the SIM card, then Power On (SD card and SIM card is bad) 3. Replace the battery (if battery aging or corrupted),you can search http://www.iboxfix.com/battery-replacement-part-for-samsung-galaxy-note-2-n7100-a-grade-p-1441.html