We opted for the Lumia 630 Dual SIM, since it can accommodate 2 SIM cards and was reasonably priced. Microsoft, I expect for the preinstalled operating system Windows Phone 8.1 more security than Android and better support. An update on the upcoming Windows Phone operating system 10, is probably already in the starting blocks, whether the Lumia 630 Dual SIM all the features of the new WP 10 can be, will be seen later. The app selection is not as great as with Android and iOS, but is slowly growing and the most important things have been around. Super Advanced and fast is the integrated navigation system. Free maps of here! The main memory is 512MB apparently adequate, but the internal 8 GB Flash memory is a bit small. I recommend a 32 GB SD card for about 16, - Euro at Amazon nachzukaufen. A slightly larger display would retrospectively already beautiful, but it fits then also problems in the respective pocket? Because of the work and the flash memory 1 star deduction! Stay 4!
