So far, I am fully satisfied with the device in all material respects, I expect as a non-gamers games from a smartphone.
*** Pluses ***
- Easy start-up, however, there must be a Microsoft account or be created, if you want to use all functions. This is for Android (Google Account) and Apple as well as otherwise.
- Many apps preinstalled, including WhatsApp, annoying preinstalled Zwangsbeglückungs apps are not available.
- Windows Phone 8.1: Most flaws that were still present in 8.0 are eliminated. For example, the volume of apps and phone can now be controlled separately. Intuitive operation without problems so far, a lot of settings.
- Good spelling correction and useful word suggestions while typing text.
- Very long battery life even with two active SIM cards (3-4 days under normal use no problem).
- Processor fast enough for normal functions and Internet browser (games I do not use, therefore no statement about it).
- Very good connection and voice quality.
- Device memory and micro SD card are very easy via USB connection to a Windows PC available, no annoying detour via add-on software (I want to mention any names).
*** Minuses ***
- The plastic back panel also includes the side surfaces, the whole works by something cheap.
- No hardware camera key and no flash LED.
- No Signal LED to indicate incoming messages.
- Display resolution could be better, but for the price is perfectly fine.
Conclusion: A highly recommended phone for people to whom a reliable dual SIM operation and the basic functions of a smartphone with a long battery life are more important than Super performance in processor, display and camera. Given the low price, this device is a "secret" in the dual SIM range.