This function was essential for me because I live in Belgium and winter are provided of electricity cuts (by zone) between 17h and 21h.
This multipurpose lamp will be very useful to me;)
I tested the mobile phone recharge via the crank. It works, but it is laborious.
We must quickly turn the crank, and continuously for several minutes.
It's good to troubleshoot and make an emergency call but no more.
One negative point though, we do not know directly access the manual you want, you must cycle between the Projector mode / lamp / flashing and off via a single button, but you soon get used to it ...
Summary: Great product, practical and robust which I do not regret the purchase.