A:AnswerI am pretty sure it wont if you buy the Sprint version. Unless Sprint has an international plan, might want to contact them.
Or if you mean if you can bring the Sprint version phone (without a Sprint service/plan) to Bangladesh and use it with a phone company there, I think it has to be unlocked.
Not 100% sure so don't take my word but trying to help.
A:AnswerYes there is adapter that convert usb cto 3.5 mm headphone jack or there is more advanced adapter that have both usb type c and headphone joack to connect them simultaneously
A:AnswerYour email carrier may only allow y to send certain photos per email due to the size of the photos. If the photos are large in size then just send 1.