I use the Tecno P6 and recently I noticed that each time I switch off my phone and charge and switch it on, it always shows the "ANDROID IS UPGRADING" (optimizing app), and I have 67 apps presently which means it'll have to optimize all the app before it gets booted which takes a lot of time....

But I also noticed that when I charge with a desktop charger (sometimes) it doesn't show the "ANDROID IS UPGRADING" stuff, it boots normally. But each time I switch off and charge It always show.

Has anyone ever been through this?
What could be the problem? And also the solution.
Thanks!!!

ur battery is dieing

ekanDamie:
ur battery is dieing

ok

Do you have any task cleaner app or something like that, that automatically cleans your cache?
Or maybe you're in the habit of clearing your cache yourself.

Those could be the cause.

Op is your phone rooted?

daamazing:
Op is your phone rooted?

Yes

Emmaway:
Yes

that's because you probably rooted with king root, and run on Android 5.1,you'll actually have to completely uproot. However try this, boot into recovery mode. Wipe Android cache

daamazing:
that's because you probably rooted with king root, and run on Android 5.1,you'll actually have to completely uproot. However try this, boot into recovery mode. Wipe Android cache

Thanks for this solution... it worked

Emmaway:
Thanks for this solution... it worked

you welcome Bro!

Reset ur device. That should solve it.