[Android Central Question]

Help! My LGG4 has suddenly started doing full screen pop ups, which just spring into life, often embarrassing me, as they have loud music or speech accompanying them. I have pop ups blocked on Google, and have not installed any new aps recently. I am at my wits end, can anyone help me, please?
No idea why this has started, I have even culled my apps, but it's still happening. I took a screen shot, but it's not allowed to add it on here.

[methodman89]

Go to safe mode. If the problem is gone, it's an app doing it. If not, Norton sells a 5 user anti-virus for 30.

[tube517]

Do you have any flashlight apps, battery "saver" apps, task killing/Cleaner apps installed?

Any apps by Cheetah mobile (Clean master) or GO apps?

[lesjsin]

Thank you both for your replies. I don't think the ads pop up in flight mode, as my phone's on that at night & I've never had one then.
I have the Kaspersky antivirus installed, but have had that for about a year. If it IS an app, it's only just started doing it. If anyone else knows how I can find out exactly which app is doing it, or how I can stop it, I'd be very grateful.

[methodman89]

Go to Settings, device maintenance, battery, scroll down and you will see every app and how much battery used for each. Your culprit should be on the list. Check it right after you get the pop-up.