Any view on how useable this is once you've turned off the Google/Xiaomi slurpware? Can you actually lock it down to the point where it bears some semblance of safeguarding your data, or are you reduced to a tropically coloured useless housebrick if you do?
Only $150 more for the iPhone SE is an absolute bargain if that's what needs to be paid for security and updates.
Biting the hand that feeds IT
