The worst mobile phone I have ever worked with.
It heats up quickly and excessively. It crashes and displays different issues. It's nerve-wracking.
I got burned again by the reviews and wasted my money.

I am not a crazy mobile user. For the two months that I have had it, it is worth it. It also has a price reduction, so it is worth it even more.

I downloaded the messenger from the Play Store, it pasted itself onto the SMS memory icon, and now I can't send or receive SMS. It keeps getting stuck with Facebook messages. I tried resetting and deleting, but nothing works. When I email TCL about the problem, they respond in Greek and say something else. When I disable the messenger, the SMS works fine with the SIM, but after a day or two, the same issue happens again. So I keep an eye on the icon. If it's blue, everything is okay. If it's white, it means it has switched to the messenger. I go to settings and forcefully stop it. (The trick is to delete the messenger from the Play Store and disable Google updates, so I manually update without selecting the messenger. Many new phones do this as a policy of Google.)

It is Android 12, what I had was 7, perfect in all aspects VFM, it doesn't have a radio which I don't care about, a monster battery, I found a case and a screen protector only in one store!!! nowhere else has the same case as the 306, inside the box it only has the phone, a USB-C cable, and a 5v/2A charger, the port accepts two SIM cards and an SD card.
...
update - it upgraded and a couple of silly features were lost, I found out and have done several tests, it doesn't freeze, with regular use the battery goes from 100% to 50% in 5 days, in the café where I often hang out, mobiles don't connect to the WIFI, this one always connects, good reception with my Cosmote provider, nice and clear screen, my friends have started seriously considering TCL to buy as well, affordable with high capabilities, I would buy it again.
...
it updated again in June 2023 and became perfect