Smartphones like iPhone 3GS?

Ok I know iPhone 3GS is like 2-3 or more years old know but that was my first smartphone I got when it was first realesed but I want a new phone now I don't want to be too expensive budget around £50 to £100 I want it to some or most of the thing that iphone can do on my new phone like smooth Internet browsing and alot of apps

4S is free on 2 year contract and that would be a big upgrade over 3GS (although not sure how contracts work in United Kingdom).

IPhone 4S

  • Why iPhone Wi-Fi better than other smartphones? We have Wi-fi in our job, only a guy who owns an IPhone is able to use his Wi-Fi, the others persons who own other smartphone can't connect to Wi-Fi in our company. Why?
  • Why can't they track the iPhones (Smartphones) of the people on missing plane? Many of them would have one and also activated locate my iPhone application. And they say your movement can be tracked on smart phones.
  • Why are Iphones so expensive than other smartphones in the market? Iphones are manufactured in China… So the manufacturing cost should be very low. Of couse, they have done a lot of R&D work… But so have other smartphone companies like Samsung, HTC etc While you can get other smartphones in the market with same features as in Iphones (or even more features than in Iphone), why are Iphones so overpriced?
  • IPhone vs other smartphones? Ok so currently I have the iPhone 4 which i love very much! I've been due for an upgrade for about two months but I can't decide which phone to get? I have been looking at a few of the other popular smartphones such as: Samsung Galaxy s4, HTC one, or whether to stick with Apple and get yet another iPhone. I love my iPhone but I feel like there are many other possibilities with other phones. Another thing I'm worried about is not being able to use emojis because I use them daily!