I have an iNew L4 running Android 5.1 on Giff Gaff (which always detects as O2 for some reason) in the UK. I am getting pop-ups on the home screen asking me to try out various apps. If I tap on them it takes me to a web page - it's never got further than that before I've killed the browser. It has also lost all my contacts and won't let me answer a call, instead hanging up and giving me an advert pop-up instead. It has been getting worse for a while, but started a long while after I got the phone so I suspect it's something I've installed rather than being factory compromised, but I don't now what by this point. I have installed virus scanner apps, removed the sdcard, and done a factory reset several times. I've also just tried rebooting into safe mode and rerunning the virus scanner - that didn't work. The malware won't go away. I've tried several virus scanners. Avast, AVG, and Stubborn Trojan Killer all tell me I'm fine, but AVL actually gives me results, telling me I have 3 "risky files". They are (including the text in orange (i don't know how to make it orange here) below each one that I presume is the reason it's risky) /system/priv-app/Settings/Settings.apk NotVir/Android.AV/Agent.a[gen] This app may have sms sending behavior without the user's consent /system/priv-app/LQLauncher3/LQLauncher3.apk Adware/Android.Waps.a[ads,prv,opd] /system/app/Email/Email.apk NotVir/Android.GenericDetect.a[gen] As I'm getting adverts I suspect it's the second one. Unfortunately AVL doesn't seem to be able to remove the damn thing! Is there a better one out there that might work? I've seen a suggestion of installing a root browser and deleting the files manually, but I suspect deleting the settings and launcher apps might be less than ideal! Is there anything I can do that I haven't thought of? Do I need to flash a new rom onto my phone? iNew's download page doesn't have a rom for it (and asking their customer services was not very helpful), but this site does - I have no idea which of those I should use! Should I install Cyanogenmod or some other custom rom? Or Ubuntu Touch? (i am running Kubuntu linux on my desktop... though I have access to a windows machine if I need to use one to fix it). Should I just take it into a shop somewhere and ask them to do it? I've been poking at this on and off for three or four days now and I'm just getting more confused and annoyed by this point!