How can i fix a all white phone screen

Since you're unable to see anything on the screen, this will be a manual job. To Restart, hold down the Volume Up key and Power Button (on the side of your smartphone) at the same time until the phone shuts down, it will automatically come up again. or

In order to resolve this issue, users should double tap the iPhone's screen, using three fingers pushed together. The triple-finger double tap will restore the screen back to its default view.

In many cases, all it takes for the user to fix his iPhone's white screen is to restart the phone. However, when a regular restart does not help, the user needs to try a hard reset, which is a more powerful restart.

With a hard reset, the user does not have to worry about touching or seeing the screen. This type of restart also clears more memory without wiping out the iPhone's data.

To try a hard reset, the user must simultaneously press and hold the power button and home button. If the user has an iPhone 7, he should hold the power button and volume decrease button at the same time. The user must continue to hold the two buttons until the phone's screen flashes. When he sees the Apple logo, the user can release the buttons and allow the iPhone to start.

There is an alternative button combination the user can try if the aforementioned hard reset instructions do not work. First, he needs to press and hold the power button, volume increase button and home button at the same time. The user must keep holding these three buttons until the screen goes dark. Then, the Apple logo should appear. Once the user sees the Apple logo, he should release all of the buttons and let the phone load.

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so if you are under a school block you cant but it may also be do to you having to add it to your chrome book like an app like i did or its the wifi you have blocking it