But back to the matter at hand.
Turn on Bluetooth on both your Android phone and iOS gear if it isnt on already.
(Google uses Bluetooth to ping your Android phone from iOS)
InstallGoogles Smart Lock appon your iOS unit.
Gif: (Google)
ensure your Android phone is running Android 7.0 or later.
Once youve done all of the above, you could then have a go at sign in as normal.
And if youre grumbling about turning on two-factor authentication, well just suck it up.
At this point, its the least you could do to protect yourself.
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Meta Pissed Off Everyone With Poorly Redacted Docs
Meta is being very transparent on accident.