Google has apparently fixed the long-standing Android Nougat WiFi disconnect issue in Nexus 6P and Nexus 5X. The Android team marked the issue as ‘Future Release’ today, meaning they have the fix with them and will release it as part of the next monthly update.
First reported by a user in build NRD90M in late August 2016, the Issue 221056 was causing Nexus 5X and 6P devices to disconnect automatically from WiFi at random times. The devices may not recognize WiFi networks anymore after reboot, even when totally switched on.
The phone would continue to scan for WiFi networks, endlessly, eventually draining the battery. Google didn’t address the issue in subsequent updates, and third part apps were also not able to fix it, so it was a big headache for Nexus 6P and 5X users.
It’s worth mentioning that some Nexus 6P owners are already reporting the Nougat WiFi disconnect issue fixed for them after they updated to the latest NPF26F update. However, it’s early to give a judgement at this point, but anyway, the next batch of updates should fix it once and for all.
If you’re experiencing the WiFi issue on your Nexus 5X or 6P device, and can’t wait for the next update to roll out, you may try keeping WiFi always on.
For this, go to Settings > Wi-Fi, then tap on Gear icon at top right to reach configure Wi-Fi screen. Once there, tap on ‘Keep Wi-Fi during sleep’ option, and select ‘Always’ on the pop-up that shows up.
Tap on Home button and check if WiFi is back already. Otherwise, reboot your Nexus device but keep in mind that a reboot would restore the WiFi temporarily, even when the issue is there. So you should better wait for a while to see if the above procedure has actually solved the issue for you.