Guest mode on Android
I have many licenses for all of my Android devices including 2 for my kids' Moto G5S Plus mobile phones. Both are running the latest available stock ROM (7.1.1 patch level June 2018) with the latest version of F-Secure SAFE and enabled parental control.
Being a satisfied customer I really thout that properly configured F-Secure software should be more than enough to restrict the kids in time and content until I had to find out that they were using Android Guest profiles to play as long as they wanted to accessing all available content - for example plaing until 3am in the morning and streaming 20 GB of YouTube content in a month.
Is there any way to prevent switching to a guest profile? Well if not, using this product is pretty pointless for any customer using a current Android device because it is not really rocket science to switch users.
What I did now on a rainy day (after the boy's playing session until 3am) was unlocking the Bootloader hence wiping the device, rooting it and adding two simple lines to the build.prop of the device disabling multiuser and hiding the user dialogue in settings making the device single user again. The downside of this - I don't get OTA updates from the manufacturer anymore.
Isn't this an option or maybe there is a different one to prevent this rights elevation even a nine year old was able to figure out?
Thank you so much for you input in advance!