So I opted for a low-priced Lumia 640 WP named
Performance / General: The Lumia is just great, despite a performance degradation compared to the P6, much smoother and snappier, with complex applications or games, the Lumia is not hot, remains liquid and maintains the battery. Even complex games like Age of Empires run without problems.
Camera: Although the cameras from the Lumia and P6 both have 8 MP, you can see a difference here. The images of Lumias are significantly richer, also bowed to P6 veschwommenen images. For images in twilight / night has the Lumia, although the P6 has the stronger LED flash, also in the lead. Much less noise and more contrast. In addition, like the Lumia camera apps.
Battery: I use the Lumia quite a lot during the day, have the Glance Screen and am often Tired of text on WhatsApp. Evening I still so left around 50-60%, sometimes 70% battery. Super!
Store / Apps: The store is in my opinion, much cleaner and tidier than the PlayStore of Android. It proposes a Apps, there is an overview of all previously owned Apps (as are even apps from my HTC case) and the variety is also given. So far I have all the apps that I have used on the P6 also found on the Lumia. Can highlight you here the contacts application, in so all contacts are stored. Here you can still associate Social networks like Facebook and Twitter and then has an overview, so all networks at once, which is always set to the latest news.
GPS: Great Naviapp with offline navigation. Particularly postitiv to mention how quickly the Lumia builds a GPS connection. When P6 which lasted between 5 to 10 min, the Lumia is immediately the connection there!
Microphone / speaker / music: are voice quality and speaker for phone calls super. To listen to music I would advise to headphones or external system, this can be very good results.
Hardware Quality: The Lumia acts fairly stable, the front consists almost entirely of glass, the rear side of the plastic cover change in a glossy finish (with me in cyan). The color is a little more intense than shown on product photos. So far it's me times like 2 down, except for a small scratch on my screen film but nothing happened. Nevertheless, it must be said that that there is a point where it was saved. The Lumia is overall very vulnerable fingerprint, one is actually constantly brushing on. The one can probably counteract the black matt cover / shell and a top quality display film. For me, at the price no big negative point.
Conclusion: Super smart phone with great price / performance ratio. Perfect to switch to WP)