Hello there!

Got my G6 Plus today, made all the available updates and then started installing my favorite apps. Everything went ok until I got to the photo gallery app. The default app is Google Photos which I don't really like using. Tried replacing it with several different apps and I can't set either of them as default gallery apps. 

I can enter the third party apps just fine, they show me the pictures, but if I try to set them as default they just give me an error. This is very annoying when you try to go to the gallery straight from the camera app. Example: I took a photo, I'm in the camera app, I tap on the upper right corner (where you have the new photo's thumbnail) and it asks me everytime which of the gallery apps I want to use. I check the "always" option but the next time I do this it asks me again. 

From what I can figure out the bug is in the "Files" factory app which doesn't register the default gallery app.

Anyone else having the issue? Any solutions? 

Thanks in advance!

On my G3 I've disabled the Photos app.I prefer the Gallery app.

Settings/Apps/Photos and disable.

Then restart the phone just in case.See if that allows you to click on a photo file like a .jpg and see if it asks you what you would like to open it with.

Also I never use stock Android file managers.Total Commander is way better,

https://play.google.com/store/apps/details?id=com.google.android.contacts&hl=en_GB

HTH :)