iPhone display not working properly

See if this helps: https://support.apple.com/en-us/HT201406

Markoserbis Said:

“Please Help. My display port not working ewerytime. Restart not help. Sorry for my bad English. : No no no i set that. my display not work every time maybe because my iPhone memory is full?”

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No reason to apologize. 🙂

Clearing Space:

If you are low on space, then you need to clear some space, whether the reason for this or not. So, refer to the following:

Clearing Space:

A. Clear Temporary Internet Files:

Clear your Temporary Internet Files(Cookies & Cache) of Safari:

• Cookies perform remembrance of certain site-entered data.
• Cache keeps a snapshot of the last time you visited a site.
• Go Here: Clear the History and Cookies from Safari on your iPhone, iPad, or iPod Touch - Apple Support

Also...



B. Clean TV and Music Libraries:

Remove all unneeded files from your TV and Music Libraries. Full-Movies take up 2-4GB typically, and a bunch of those would take up a load of storage, ideally. So, if you have any movies that are not needed, then delete them.

Also..

C. Clear "Other":

Clear the storages named "Other". It basically contains unnecessary files such as caches that are used for system ease of use - all of which gather over time: How to Clear "Other" in your iPhone's Storage - Use Backup - User Tips. Caches would be being used for remembrance of application use.

Use Get Support link at the top right of this page for options.