Why I was asking about the make was because I know for a fact that some android phones are very hard to backdoor (install a spying app) than others e.g. it took me the better part of the day and visits to seedy parts of the internet just to get the s7 rooted (Knox security is such a bitch) and at that I had to wipe the phone and then at the case of tecno spark 3 is what I tested on it basically just took me downloading an app from the internet and connecting the phone to my pc and in less than 5 minutes it was rooted.