Nexus sons have been eating the latest nougat (Android 7.0). However, for some old models, it is impossible to expect official updates. For example, the official version of the Nexus 5 model under internal testing has not yet been found, let alone the Nexus 4 machine four years ago. Fortunately, Android is part of open source. While pushing the official version, Google also uploaded the source code to AOSP, and the gods of XDA transplanted nougat to Nexus 4.
According to XDA Android 7.0 for Nexus 4 is not the perfect version at present. Some functions such as Wi Fi, Bluetooth, RIL, H/W Acceleration, USB, etc. work normally. The known problems are the camera NFC、 Some sensors can't be used. If you want to try some new engine oil, you can go to XDA to download and brush the machine. The building owner also provides GApps and SuperSU.
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