actually mobile after getting new type of OS it will get some bugs. company continuesly delivering new updates for rectify the bugs. If any problems occurs due to new update?it will solve in next update.
actually A50 only support samsung original OTG.. it comes with note8, s10, note 9 box. problem is you cannot buy that separately. Go for near by samsung direct mobile showroom ask for OTG if they have extra they will sell to you. but it may cost near...