My 5s took enough spills that I think some small opening in the case let lots of dust/sand get under then lens. The OG battery was losing sectors left and right

My 5s took enough spills that I think some small opening in the case let lots of dust/sand get under then lens. The OG battery was losing sectors left and right too. Probably fixable, but I went with a new phone anyway, 5.5 years on a phone was long enough...