back up and factory reset your device, that should help

chingle5:
Guys serious nw.... Anyway i am using Nova launcher I don't use any launcher apart from Nova... But there is the strange alarm clock app I always see among downloaded apps bt I can't remember the time I enter Google play store and download alarm clock... Or maybe it is the unknown app that is download those junks

Your phone make and brand is actually the issue here...
The makers of your phone installed Factory-set codes for adverts, directly to your phone.
Once there is internet service, it detects flash-adverts that are related to your cache and cookies history on your browsers, and your recent internet activities, and present them to you even if your screen is in lock mode, it will still find a way to present the adverts to you there.

Ishilove:

I have uninstalled that useless Viskit on my Tecno uncountable times but it keeps reinstalling itself.

Have you gotten a solution? Maybe you should try another launcher.

I was just checking my old post and i came across this one, i just cant help it but to laugh i really appreciate everyone that tried to help me resolve the problem... The phone or rather the gorilla really showed me SHEGE ... I dont even know where the phone is, i think it later spoil or something i can't remember thanks guyz