After 2 years my S2 became a slow unfunctional piece of dead tech. I tried resetting it through the Samsung tools, which didn't help, so I rooted it and tried different versions of basic android on it, which didn't help. At the same time I had two friends who were experiencing the same kinds of problems, who let me toy with their phones.

It's completely anecdotal but three similar model phones breaking in exactly the same manner at exactly the same period in their lives was enough to put me off Samsung for good.

It's been some years since and I've seen Samsung in one scandal after another. Like the time they had an entire range of flatscreen tvs break because they put the transistors too close to the cooling plates, fixing it by moving the transistors but replacing the $0.5 piece with a Samsung produced transistor which they've never sold, making repairs nearly impossible.