Since the end of April I have the 5830i. Only after the purchase I have read here, how many problems there are some with the 'i' model and was really excited to worried about what will happen to me as well. Gratifying result: The machine runs so far without any problems, WLAN during a vacation in several hotels and at home without any problems and no crashes! To date, the unit has hung up when surfing the Internet 1x (in approximately 6 weeks), which I think is perfectly acceptable. Perhaps by now been rectified in the series? The device is certainly not for big games and extreme applications as the storage capacity is still somewhat limited, and the processor is not the fastest. But with the standard applications everything goes without jerking and very fluid. The display is certainly not comparable to the brilliance of AMOLED, but quite tidy and perfectly adequate for my needs. Battery life in standby is very neat, but of course depends on what you are doing with it and how long. But that's all smartphones that. Check for the use of a few everyday apps, occasional e-mail and surf on the go, I find the device in this price range very well. And it also fits well into your pocket without the display is too small.