A:AnswerI have this same case for the Note 8. You don't have to charge the case at all, it draws power from your phone somehow. So as long as your phone is in the case, it will work without you ever needing to charge it.
A:Answeri like the protection of the cover when its closed and features but if it falls flap opening facing down it opens up due to nothing holding from opening and of the times i tested it on my couch (3ft high) it lands screen down 7 of 10 times now i have a shattered screen and un happy of my 6 day old phone
A:AnswerYes you can charge with Q wireless charger! I still have the one from my Note 5 and charged it perfectly with the case on the Note 9! Very pleased.
A:AnswerIt is much cheaper to trade in phone after your 2 year contract is up with your carrier. The only exception to that is if your carrier is Verizon and your on their Verizon Edge plan.
A:AnswerI don't know about the Samsung music app, but I was able to control the Apple Music app on the note 9 with this case.. So I know it's not just the Samsung music app itself that can be controlled. I really think it's more of a feature of the phone that is available to the case itself.. but I could be wrong there.