Security Master from Cheetah Mobile
Google Play : Security Master - Antivirus, VPN, AppLock, Booster - Android Apps on Google Play
The video ( not made by me ) shows the UI ( User Interface ) and how it works. They rebranded the product from CM Security to Security Master and that can be a bit confusing depending on what country/region it's installed in as I noted myself but also because there are other very similar looking products on Google Play with almost the exact same name, logo etc and I found no affiliation in any shape or form.
Test machine : Sony Tablet S ( 2012 )
OS : Android 4.0.2 release 5a
Software : Security Master 4.2.8
VPN : Other vendor
Yes yes I know both the tablet and OS is way too old and shouldn't be used but these is what was around at the time for the review unless I wanted to run it in a Virtual Machine. Rooting was also an option as it's very easy to do and a little newer OS could be installed ( 4.1.1 release2 ) but I doubt it would do enough to cover the security patches needed. I have not tested the software against any malware samples or malicious urls but instead trust better on tests like this : https://www.av-test.org/en/antivirus/mobile-devices/manufacturer/cheetah-mobile/
Netflix and Ebooks are in general what I use the tablet for but I will look for a new one as they are pretty cheap and I might wanna do a few more things.
The UI ( User Interface ) as it's easy to understand and easy to read. The navigation is swift and works very well. On a smaller phone or tablet it could ofcourse be harder. The software is not flooded with adds as other products I tested but it does points a bit much to other builtin solutions but it's not exaggerated IMO.
Directly after installed and started it asked to patch several critical OS security issues as the OS was old and those was fixed with just one click. The scan found nothing malicious and the other builtin solutions was also tested as they popped up without any real issues found. Settings was easy to setup. The software itself if correct setup can not be uninstalled through the OS settings.
The applock studders for a few seconds when the OS is started and it's possible if fast to access and delete locked apps ( not system apps ofcourse ). I can guess also through safe start but not tested. Could be because both the OS and Tablet is old.
The VPN. It does work yes but only with 200MB daily and that I used up through a few clicks on speedtests. Also when compered with my other VPN vendors Security Masters VPN shows inside the software speeds over 40MB/s when in reality it's as low under 10MB/s. Good coding?
The last thing and personal most annoying is that it will not work in landscape mode. It doesn't rotate when I rotate the tablet as other software does flawless. Not sure why really and don't seam to be a payed option.
Even if it seams to have a few Cons and even if the company is Chinese I would still recommend the software and if you don't like it...uninstall it.