OS update is less of a concern to me. If the phone is from a major company, there will be custom ROMs like the LineageOS sooner or later. It will last me a good while before becoming obsolete as long as the SOC is good enough.

I signed up just now, but there is no email. I don't know what went wrong.

Update: I got the email, but still no discord link.

Really? I thought the project was dead. I cannot find any news or update on this, let alone a whole discord server.

If only there was a new Android phone with the size of iPhone 12/13 mini.

You may want to take a look at the Xperia 10 series then. They are not as small, but they do have 3.5 mm jack and microSD card slot.

Actually, come to think of it, I think Sony has been releasing 5" phones as the Xperia Ace series. They are budget phones that are only available in Japan. I heard the spec is not very good, so I didn't bother to get one.

Galaxy S21/22/23, Asus Zenfone 8/9 or Sony Xperia 10 or 5 Series

These are very good phones but they are not small enough for me.

The size of XZ2 compact is very nice but I hate the curved edges and back panel. I think XZ1 compact actually suits me better, but it is almost 6 years old now. I don't think I will be able to use it for long.