Almost all smartphones these days have become the technological swiss army knife. I still use my 1520 and 950xl as my daily drivers.
If I were to upgrade and still want to use these devices there are quite a few things I would and could do.
1. Use this device as my holiday device. Both phones are quite high end in their own right. A new smartphone device will likely be an expensive purchase, so not someting I would likely want to use. By using my lumia as surrogate holiday phone I would be less worried if my phone was lost or stolen.
2. Use it as my go to car or bike navigation device. Windows map navigation is still a good everyday navigation device for day to use with the car or public transport. I use it everyday. I don't have built in navigation in my car, so this could be a good replacement, and it can do more, such as my music player in the car. I do it even today. And the use of live tiles is good. You can pin many albums and routes to your start menu. One press on the button and the music and navigation starts instantly. No need to enter navigation data. Great for navigation on the go and less accident prone by being less distracted to the screen. Also the phones have good and powerful flashlights. good in an emergency.
-use my phones for timelapse photography. The sensors of both phones are good for this. Just put it on a tripod, grab a coffee and come back a while later.
-Use the phones for multi-angle filmography shots.
-use the device as your new document scanner. combined with lens, a modern phone device is amazing. 20 mpix also gives a high resolution copy.
- If there was a developer that could develop an app to connect two lumia devices, I was thinking of building a backup camera using two lumia devices. One would record and send the images, the other would receiver and display the images.
- If there was a developer who could make an app where I could use bluetooth or wifi for short range walkie-talkie communication without having to use a 3G signal.
-I could use my phone as a mobile storage as a wifi hotspot for accessing files and streaming them from phone to phone.
-With a benchmarking app, I could use the phones in the winter as handwarmers.
-with continuum, I could use my phone as a low end pc for basic producivity.
Actually when I think of it, the phones are really amazing, despite the fact of reality of the progression of technology. the 1520 and 950XL as truly versatile devices and close to a pc in your pocket. Quite amazing, when I think what really matters in everyday life.