As somebody who bought and used the iPhone, 3g, 4, and 6 plus. And having owned a nexus 4, 5, 5x, and 6. (not including tablets on both sides) I don't have any

As somebody who bought and used the iPhone, 3g, 4, and 6 plus. And having owned a nexus 4, 5, 5x, and 6. (not including tablets on both sides) I don't have any hard figures but my recollection suggests Google supports their phones longer than Apple typically does the iPhones. Plus you have the option of open source images like cyanogen when google finally gives up on it. I'm not sure about the nexus 5 now that they just released android 7, but the nexus 4 is the only one that isn't on android 6 at the moment. They are currently in the processes of releasing the android 7 images to these devices. https://developers.google.com/android/nexus/images https://developers.google.com/android/nexus/images