Android developers and tinkerers should be pleased to know that the latest AOSP release – android-5.1.1_r5 – finally includes code for WiFi calling, a feature that was introduced for the first time on a Nexus device with the 5.1.1 update for the Google Nexus 6 by Motorola. So, what does this mean for you?
If you have a Nexus 5 or a Nexus 4 by LG, the inclusion of this code in AOSP means that the possibility has been opened for enabling WiFi calling on these devices. It probably won’t come through official channels, given the age of these devices, but developers should be able to bake it in to custom ROMs.
And speaking of custom ROMs, this also means that fans of CyanogenMod or other AOSP-based ROMs on other devices (like the Samsung Galaxy series or HTC One series) might also get WiFi calling support in the very near future.
This does require a bit more investigation and work, though. It’s likely that since features like WiFi to VoLTE hand-off are radio and kernel dependent, they might not work for the foreseeable future. But still, this gives me great hope.[AOSP via Reddit]