And just so everyone knows. My personal experience is that I have seen these pop-up ads that get in the way of what you are doing which happens every hour. I have also seen the ads that pop up in the notification bar.
It does not concern me much about being able to get rid of the ads. It concerns me more about the security risk that is going on and the fact that there is actually malware built into the custom ROM which is installed on some of these phones. This is preventing proper security updates from being downloaded on purpose.
Because of this fact, I am sending back the phone that I ordered on eBay a couple of weeks ago and I have already let the seller know of this issue and I referred them to this forum as proof that I cannot use this phone.
So my suggestion is, if you are still able to return the phone to whomever you bought it from, you need to do so immediately. Because this problem is completely unfixable. Just because you don't notice any strange behavior anymore because you think that you have spotted the apps which is causing it and have disabled them, that does not mean that there are not problems in your phone.
Things are going on in the background due to malware that you cannot see. I repeat, you cannot see everything that is going on in the background. Because of the fact... the proper security updates are not being downloaded to your phone.
The malware is preventing it from doing so in the background, this means that something can be recording your information such as passwords and other info by taking screenshots or key logging what you type into the keyboard. You can never tell. But it is definitely possible. So you should return this phone if you can.
Also, not everyone who has this phone is experiencing these problems. It is a certain version of custom ROM that is been installed on some of these phones, mainly the replacement phones that someone orders when something has happened to their original one. The original phones did not have this problem because they have the real (original) factory installed ROM on them.