Recently we have had increased number of backlight repairs on iPhone 6. 5 phones within last 7 days. It appears that all...

You have to remove the screen, it's assembled the same way as galaxy s5 , but adhesive that holds the screen is not as bad. Would not recomend if you don't have experience

Charging port could be lose and hence its not charging

Could be overheating, best thing to do is to take it apart clean off any dust that got collected over the time and replace thermal paste on heat sink.

There is "no stuff" on those http://imgur.com/a/vJWud. Is camera just blank and frezzes when you switch between them, or it switches normally just both are blank? Also those are suppose to be capacitors, would not be a good idea to jump them, you will create a short