iPhone contact list missing and phone will loop unless you charge it

There are three kinds of recovery mode: to recover data directly from the iOS device and to retrieve previous data by extracting it from iTunes and iCloud backup!

I think use the iPubsoft iPhone Backup Extractor to recover lost contacts from iPhone backup is the best way for you to get back them.

With the growth of the use time of your iPhone, there will be more and more call records on youe iPhone. While you are cleaning up the trashy entries, you may mistakenly delete what are important to you and haven't been stored to address book, or sometimes you may clear all items of your call logs. That's bad thing but take it easy now, the Coolmuster Data Recovery for iPhone iPad iPod can help you recover the lost or deleted contacts from iPhone.

For this situation, you can recover missing contacts list from iPhone by following 2 ways.

1. Restore the deleted contacts from iCloud.

2. Extract contacts from the latest iTunes backup file.

Both Methods requires that you have done backups before. Because of your iPhone hardware problem, I suggest you should complete the recovery by third-party tool iPhone Data Recovery, which can help you selectively extract data from backup and save them on computer.