Mine are still working after 5 years. I probably average 1-2 hours a day on them though which may be less than normal.

Ordering delivery from two separate places is your problem

Being pedantic but it’s concrete not cement. Cement is one of multiple ingredients of concrete. It’s a binder.

Buying this phone as a “spare phone” you very well may never actually need seems to contradict the point of it

A candle