Its been a few years since the release of the Droid 4 and Droid Razr. The Droid 4 was the last mainstream device to be sold with a physical keyboard. The device also released with Ice Cream Sandwich Android 4.0.4. Since then we have seen 3 iterations of Android released by Google. The Motorola Droid 4 and RAZR were both end of lifed over a year ago, but you can have the latest and greatest version of Android on your device now thanks to Cyanogen Mod. The build is Unofficial and there may be some bugs, but the build is worth a try if you are interested in getting a glimpse of Android 5.0 Lollipop.
Whats working:
-Phone
-Mobile Data
-WiFi
-WiFi tethering
-GPS
Whats not working:
-stock camera app
-connectivity issues
-Data encryption
-Reboot recovery
-Playback of DRM-protected content
Via XDA