Title says pretty much everything. And sorry if this topic has been done before (or to death)!
In short, I have had my S4 more or less since they became available in the UK, and upgraded from an S2. S4 still works well, no real problems, so I do not need to replace it in any hurry. The blood’s oxygen sensor and always on the face are appealing.
So for anyone who has made the same leap, these are two features value does the move?