Knowing that your 3a is still performing well enough promted me to double double check things.
I found that "Do Not Disturb" in the notifications settings is not just a simple on/off toggle but a sub menu. Under schedules in there I had "Flip to shh" on. In my example today it was sitting face up on my desk so should not have been in DND mode, but in general maybe being in my pocket is triggering this.
I've also cleared cache and data for Chat and Messages and they both prompted me to enable notifications when first run after that. (I'm sure I've already done this recently but can't hurt to do it again)
And, I've switched back to Pixel Launcher as a test. I much prefer Niagara and will switch back as soon as I notice and improvment, or determine that changing launcher has not improved anything.
Thanks.
I'm aware of the battery issue. Mine is one of the near bricked ones. I'm down to about 50% before I finish breakfast and coffee most days! I'm home most of the time so it's not a big deal - I can charge often. If I leave home it's in a car so I can charge while travelling etc. Because of where I live a replacement battery wasn't an option. I've been wanting to do it myself but the kits are out of stock ever since the announcement.
Someone else noted that their Pixel 3a is still going strong and this prompted me to recheck everything. We'll see how it goes.
I'm not just holding on to it to keep it out of landfill - although that is certainly a consideration. I really like it - the size is right etc. My wife has a Pixel 6 Pro and it's huge. There are no new options close to this size. I am keeping an eye out for a local used Pixel 7a and will do that if I find one at a reasonable price.