I had a gear s3 frontier that I got about a year after it released. I didn't baby that thing at all, and I took it swimming pretty often. It lasted until about 3 months ago.

A little water got in and stuck it in a boot loop. I went out and ordered a replacement battery, and viola, it still works minus the back button, which is probably a reassembly fuck up and fixable. I had already bought a watch5 pro, so I don't really care about fixing it further.