Useless as a smartphone

Call goes but the use of the Internet is thus already annoying. Wi-Fi connection setup takes about 2 minutes. The screen responds very slow and unreliable at inputs. A single 1GHz processor and 512MB of RAM is no longer zeitgemäß.Mein device does not seem to rule in certain areas of the screen. Entering an e using the virtual keyboard works often only after the 10th time. Maybe this is an isolated incident - So I have times try the warranty.
The screen size of 4 "is not sufficient for the Internet. How IPhone users were previously clear it?
However, if you only need a phone can access calm.