So I had two apps from this website: lightinthebox and miniinthebox which I removed. Also I downloaded both Sophos and Eset to scan it without bad results. But without the phone rooted, I also searched a bit on google, and it appears that the MT 6735P can't be rooted. And without a rooted phone, I can't have an effective scan to detect spywares, keyloggers or other shitty things, right?
Then how do you think I could efficiently scan my phone before using it properly?