A:Answeri own both and the 45 is faster for sure. you get what you pay for. if you are in a rush get the 45. the 25 works too but just a touch slower than the 45.
A:AnswerIt would provide power ok but my guess is your phone won't be able to use the USB-c port to connect at either the phone side or on the power adapter itself.
A:AnswerIt was compatible with my Samsung Galaxy Note 8 as well as my new S21 5G Ultra cell phone. As long as you have a USB - to Type C port, it will work fine. It does charge very quickly.