“Oh, my iPhone 6 stuck on white screen, what can I do now? Who can help me?”
That’s too bad your iPhone 6 stuck in white screen of death, but don’t worry, in this article, you will get 5 good ways to fix the iPhone problem. 
Way 1: Force Restart
Press and hold the sleep/wake button and the Home button at the same time and keep holding the buttons for 15 seconds, or until you see the Apple logo on the screen.
Way 2: Remove The Battery
After white screen shows up, open the iPhone, remove the battery clip, put it back and then boot your phone again. When removing the battery, you will have to remove two screws located at the bottom of the phone, and then two more once you lift up the screen. If you have never done this before or if you are not sure how to do it, skip this step or ask someone who knows how to remove the battery and put it back in.
Way 3: Three Fingers Trick
You can try this little trick. When you see a white screen, try using 3 fingers at the same time to double tap on the screen.
Way 4: Turn Off Auto Brightness
As soon as the white screen goes away, which usually happens after a while or after the force restart, go to Settings > Display & Brigthness and turn auto brightness off. Some users reported that ones they turned it off, the white screen issue didn’t bother them anymore.
Way 5 Use the tool—Reiboot
Reiboot is a very famous freeware that can help you fix iPhone SE/6s/6s Plus/6 Plus/6/5S/5C/5/4S/4 stuck in White screen of death with just one click. What’s more, you won’t cause any data loss when you fix the iPhone 6 that stuck in recovery mode any more. And only three steps will be OK !
1. Download Reiboot software on your PC .
2. Connect your iPhone 6 to PC and run the free iPhone reboot tool. You’ll find that the “Exit Recovery Mode” button is now activated when the connection is successfully built.
3. Click on the button and wait for about 20 seconds to fix the recovery mode issue. Then your iPhone will reboot signifying that iPhone is out of recovery mode.
These 5 ways to fix iPhone white logo problem are all very simple and they were helpful for many iPhone owners. If you tried them all but still experiencing the issue, visit the Apple Store.