Anyone able to tell me if it's worth changing from the iPhone 4S to the Samsung Galaxy S4? I'm sort of over the iPhone, and wouldn't mind a nice change, but then again i have a lot of apps on my iPhone....
No one can really answer this for you. It really is up to you and what you can comfortably give up.
Personally, what I do is keep an Android phone and an iPad for a tablet...this gives access to both ecosystems, but it's not the perfect solution for everybody.
Consider the following:
- Are you the kind of person that likes to tinker extensively with your phone? Android is a platform that rewards people with the patience to dig into it. If you are more interested in a phone that "just works", iOS may be more suitable for your needs.
- How do you feel about mobile gaming? iOS is the favored platform for mobile gaming, and while Android gets more love nowadays, many ports come later and aren't always as well-optimized (due to having to deal with so many platforms and hardware configurations.)
- Do you use Google services extensively? The more you've bought into the Google ecosystem, the more an Android phone makes sense.
- Are you the kind of person who's disappointed when an app isn't out first on the platform of your choice? iOS attracts a lot of developers for several reasons, and often is the launch platform for a new mobile app. (see Vine and Instagram for recent examples.)
- Are there certain kinds of apps you'd completely lose hopping from one OS to the other? For example, the majority of music production applications are on iOS, due to the focus on low-latency audio.
These are the kinds of questions you need to ask yourself.