Furthermore, I'd like to say about the most important technical details.
The battery is as I said interchangeable and has a capacity of 2200mAh. I find the battery compared to other smartphones very good, it lasts a long time and I do not charge my phone every day. The Nokia Lumia 830 runs on the Windows Phone 8.1 operating system. One can arrange his personal favorite apps in the form of tile individually to the start screen. These can be installed in three sizes and thus receives a very stylish screen and by the different sizes you can make it clear what apps are more important and which are of less importance. Operation and commissioning of smart phones is very easy and intuitive. Therefore, the smartphone is also suitable for beginners and the transition from an Android or iOS is not difficult.
The smartphone has a 10-megapixel rear camera with Pure View technology, optical image stabilization and LED flash, which makes for super great photos even without professional camera. Personally, I find the camera great for amateur photographers and if you just want to go even hold what. It replaces a medium-priced digital camera.
The built-in front camera I use mainly for Selfies and for video telephony via Skype, really like it very much.
A great app I do not want to hide from you also. With the Nokia Lumia 830 you have in addition to the known functions of a smartphone is also the possibility via Here Drive + or Here Maps to navigate offline. This means that you additionally a really great Navi in your pocket you with the smartphone, which is free. The app warns speeding or shows you where you've parked your car. Moreover, I find it very convenient that you can plan not only car routes, but also routes on foot. In addition, you have the possibility can look at the way before each ride, which I personally very accommodates.
Conclusion
I would recommend the smartphone on the whole really recommend it. At a comparatively low price you get a great device, which combines many functions in one. It simply provides a great value for money. So I can any doubts, advise readers to buy.