Ip 13 ako. Not much performance issue. Down side. Sobrang init nga lang lalo pag na laro. Ps: any device na full storage na lag. Also battery health. Pero tbh. Wag kana mag update. Useless lang naman asside sa new look and security etc. Imean...
Not sure but maybe nand chip. I have similar issue sa ip7 ko. I tried to reflash rom nya but failed cause of physical damage ng nand chip. [Base on displayed error]. if the simple vol- + & power hold cant fix the issue. And reinstalling os also...