I've got my 3GS back and it's a DOG compared to my iPhone 5 on iOS 7, just as I remembered.... I'm wondering (assuming people remember the 3GS ) if it's worth upgrading it to its last OS version it supports. On 5.1.1 I'm having an issue with: -Gmail not allowing Mail to connect (security reasons it looks like) -iMessage quit working once I took my SIM out of the phone and put it back in my 5, in spite of it being activated and still on wifi. -Messages that did go through don't show on my iPhone 5 (which btw is happily still able to iMessage sans SIM Since the performance is already bad I'm hesitant to go up a version. Did anyone do it and think it was an improvement? I thought I remembered someone here saying 6.1.x ran better than 5x. Thoughts? Other than putting the 3GS back in the box and leaving it in the past of course, I'm just messing with it for a short hobby.