I am using Metro launcher, I can click on the date and get advanced settings, but when I click on the cog the screen goes blank then comes back to the home screen.
When I click on settings in the all apps menu the same thing happens.
I disabled the contacts app.
Not sure when this started.
That is weird. It is the exact same symptom of the situation described in the title, but instead of having the Contacts app as a reason there seems to be something else...
A few things could still be tried instead of going into the quick and desperate solution of reflashing the box. I always prefer to find what is causing the problem as reflashing will eventually having you getting back to the same loop should you reinstall everything back. Besides, losing all is quite a pain...
What I would do one by one and by this sequence:
- Change the box language to English USA, restart the box, try the Settings. Should they work you can change the language back to what it was.
- Get into Advance Settings, Storage, click Cache to clear it. Try the Settings.
- In Minix Metro click All Tasks Killer, try the Settings, if still no magic, go to Advance Settings, Apps and disable one by one. Don't worry, the ones required by the system will start automatically on next reboot. Take this chance to uninstall or disable the ones you are certain you don't need. 1 - Try the Settings. 2 - Reboot the box and try the Settings.
- If you installed something from outside the Playstore back it up and remove it. Try the Settings then.
- Turn off the U1, press the power button and hold it pressed for aprox. 10 seconds. This gets you to the recovery menu which has an option to Clear Cache. Select it, and once done select Normal Restart. Try the Settings.
- If none of the above produced the required effect you can still try another thing before going into the drastic measures.
@Alexdroid mentioned an app that seems to perform well in repairing Android systems, he mentioned it regarding a U9-H, and I never tried this myself, but since we are getting out of options maybe you can give it a try, read about it here:
https://theminixforum.com/index.php?threads/cleaning-restoration-application.534/
If none of the above works I am really afraid we are left with only two remaining options, and any of them will wipe all your data, so you will need to backup everything you need to keep, data and apps.
1 - Factory reset (brings the box to it's initial condition)
2 - Original Rom flash (should factory reset not resolve it)
Instructions for both of the above can be found here in this forum.