iphone 6 freezes and videos dont work since 8.4
ever since ios 8.4 my iphone 6 has been freezing/locking up as well as crashing and when i try to play any sort of video whether it be youtube, safari or snapchat its just a black screen
iOS 8.4
First, reset the phone by holding the sleep and home button for about 10sec, until the Apple logo comes back again. You will not lose any data by resetting, but it can cure some glitches.
If this does not work, and to make sure that this is not software related, set it back to factory settings, without using any backup data afterwards. Set up the rest of the personal settings manually and test the video app.
If the phone works as before the update, restore from the latest backup. If the problem comes back, the backup data contained corrupt data, causing your issues.
If it still does not work, the phone has to be checked by Apple or an Authorized Apple Service Provider:
Use iTunes to restore your iOS device to factory settings - Apple Support