With This module u will be able to get gray scale which is completely free and also a donation key available on play store which will allow to add apps in upsm mode.That's not what I was worried about. While I'm a newbie I got that clear.
The thing is, this mod, as opposed to other simpler ones, seems to be to act at a... lower system level than most other modules I've seen and the developer stresses the importance of having backups and recovery. The thing is, I don't have recovery, as installing *that* would trigger Knox and theoretically void my warranty (although that, under EU laws, is in very cloudy territory). This is why I was asking what was the module to just get grayscale and if it was "safer" to use.
Thanks once more.
You know what ,taking a nanoroid backup is for your safety if anything goes wrong ,then u can revert back.
No one can give you guarantee that it would work effectively 100 % .
But I can say that at least it is a wonderful module.
So its completely up to you that whether you gonna go for it or not.
For me its 100 % effective and havent caused any problem.
Btw are you on kitkat or jelly bean?
For me I havent faced any issues yet.