I have a couple of these already but they were cheap and started falling out of their plastic casing. Probably not worth it to take chances even if they do still function. I definitely won’t be using the one for my iPhone 4 anymore since the upgrade anyway. Oh well, we had a good run.
I was actually going to buy this for myself, but my mother decided to throw it in with her purchases before I had the chance. It came pre-charged (though not fully) which was a nice surprise.