For me its the ‘Knock Code’ that LG had on their phones (I really wish LG still made at least the V series phones)
Basically there was a four-square area and you set up a sequence of where you would tap to unlock the phone. That set of squares was only shown when you set up the code
Then, to unlock your phone, you would tap those areas in the sequence you set up (even with the screen off).
Fingerprint readers are nice, but I really do miss the knock code
Edit: did find this article with a way to do the knock code, but if done wrong, could brick your phone I guess.
Plus, article is from 2014. When I looked at XDA’s info on it (they also being the developers) it looks like development on it is over, but individual modules may or may not still be supported by their devs
Ok, I had to come back and check. The specific version I’m using (official from here) is vanilla (without gapps), but if this is something that bothers you there are 2 other developers building crdroid for this device and at least one of them is offering a gapps version. If I remember correctly I’m using nikgapps core, but I’m not quite sure. If you want to see more roms you can find them here.
If you’re asking about the experience, I can tell you that I haven’t encountered any issues with Google services / notifications or really anything else (and this isn’t just this rom, most custom roms work well and are more than good enough for daily use).
Thank you kind soul!