Originally Posted by
Aflaaaak I can't see Storage Preferences anywhere in Settings.
Which settings? The camera app or other specific app, or the general phone settings? The one you need to look for would be in the individual apps. I don't recall a global setting for save locations from when I had the G4.
I used to get a popup asking what I wanted to do when I plugged my phone into the computer. I no longer do for some reason.
As mentioned above, this could be a cable issue, or a port issue. The G4 uses micro-USB cables, which are notorious for going bad, so I'd start with a new one first. Especially if charging performance has slowed down or become intermittent.
I went to File Manager and found the folder where the photos I want to move are, but Share or Delete are the only option. No choice to copy/paste them

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Since you are trying to transfer photos, have you tried using the photo gallery? It has an option to copy and paste to the SD card. I'd also suggest you go into your phone's main settings, then to the storage settings. In it you should see an option for the internal storage and SD card. If you don't see the SD card listed at all, then either the card could be corrupted or the card slot is defective and not reading it. Try to power off the phone, remove the card, then power it up again without the card. Once on the home screen, insert the card and see if it's being read.
You could have two or three possible problems here. The G4 also has a design flaw making it prone to bootloop. When that hits, data recovery may be difficult (there's a couple tricks to get it to boot long enough to backup info, but it's not guaranteed). There's no warning before it happens, meaning you could be on a ticking time bomb.
So the first thing I'd do is install Google Photos if you haven't already. Set it up for the free photo and video backup service and make sure it gets everything you'd want to keep. Also make sure anything else you'd want is backed up to a cloud service. That way if the bootloop hits before you solve the current problem, you're not back here asking how to recover potentially lost data.
If your main goal is to get the photos on your computer, I'm pretty sure you can access Google Photos from there to download them. That would bypass the SD card and USB issue. As for those problems, I don't know how much time I'd invest in fixing those. The bootloop problem aside, it's an old phone that's no longer supported and just due to upgrade anyway. I wouldn't be surprised if you're running into issues with lag and general slow performance simply because apps are updating beyond what the phone can handle smoothly.