my ios 12.2 have problem with camera and call speaker

hi everyone, since my last update ( 12.2) i can't recall the date, my ip7+ having this problem, first the camera cannot shutter, the lagging is out of space. the i reset the phone, even erase everything lost my precious picture, because i think the problem from insufficient space. thanks god, the camera problem solve, but here comes another problem, when people call me, i can pick up the call, but can't hear anything, and the speaker symbol also lost, unknown what happen.

then i reset again, the phone call is solved, but, the camera issue come back. what i day, and since than, my ip7+ feel like never before. until i writing this, i has been resetting my phone countless time, i hardly can remember it. really look into soluction, for now the best option for me to reset it everytime according to my need (to take camera or to use phone call)

hope anyone with the same problem with me, or know how to resolve this problem, share me your experience and solution. looking forward for solution from all over the world.

peace from penang, kedah