Speaking of fixing iPhone 6s stuck on Apple logo, there are three solutions for iPhone users. The first solution is to hard reset iPhone by press both "Home" and "Sleep/Wake" buttons, The second solution is to repair it with iTunes. And the last one is to restore iPhone without iTunes by using RecoveryTool Fix Recovery.

OP, take a look at this guide, the method i am currently using. Here is the step by step tutorial:

http://www.recovery-tool.com/android-recovery/recover-contacts-from-android.html