Original post by: Minho ,
Hi Jenny. Here are some answers to your multiple questions: * Parts are not interchangeable between the 5 series, the 6 series and the 6S series. * The logic board "IS" the phone so if you have an issue with it, putting it in another phone housing will not change anything. * The only way to recover data from an iPhone (other than via a backup) is to get the phone working nominally so that the data can be extracted via software...unless of course you spend a million bucks like the [http://fortune.com/2016/04/20/fbi-san-bernardino-iphone/|FBI did in San Bernandino]. * You did some good troubleshooting by removing the screen and ruling out the battery is a safe assumption at this point. Your best bet is to have the phone looked at by a reputable micro-solderer. They will diagnose the phone, usually on a no fix/no fee basis, and determine if the phone is fixable or the data recoverable.