This comment looks very bizzare to me. The clock thing has been changed years ago, nowadays it's a timeface where you tap the hour in the first stage and the minute in the second, after that you're done setting the time.

> And a lot of useless stuff I cannot delete

Well yes, the os is made by a monopolistic ad company that tries to get your every last bit of sweet, sweet data through its services, but there's an extra step in the distribution chain where the hardware vendor can throw as much garbage into the system rom as they want. I deem android phones without lean cfw pretty much unusable.