Q: Iphone6 keeps freezing even after restore

Hello ka30,

I understand that your iPhone continues to freeze up after restoring your backup. If you are only in need of the contacts and documents, using iCloud may prove to benefit you. I would update your Mac and iPhone to the latest version and then back the iPhone up via iCloud.  Then use iCloud Drive to store your and sync your documents. You can then restore the device to factory settings, set up the device like new and sign into your iCloud account to sync the contacts and documents stored in iCloud. You may need to import your contact list into iCloud if they are not already stored there. The links below can assist you with these tasks.

iCloud: iCloud storage and backup overview

Set up iCloud Drive on all of your devices

Use iBooks with PDF documents on your iPhone, iPad, or iPod touch

Use iCloud Drive or iBooks to access your PDF files, ePub files, and books

Get help using iCloud Drive

iCloud: Import a vCard

Thank you for using Apple Support Communities to post your issue ka30. The links above will assist you with organizing your data in iCloud and syncing them up once your iPhone is restored.

Have an awesome day.