On Fri, 2 Jun 2023, Mario Marietto wrote:
I forgot to specify that I don't like a telephone so much like I had 20 years ago. I mean,I would like to see a VOIP phone with the form factor of a smartphone. Sorry if I haven't been very clear.
I use linphone on android. But modern androids are super annoying and you have to jump through hoops to stop it sleeping and disconnecting wifi/mobile data and vpn. But an older model phone on wifi with no sim would seem to do what you want. I have an Alcatel 1 setup like this that works well and lasts for about a day on battery with the sleepyness disabled. I use connectbot on a more modern phone to disable sleep - but that doesn't lock the screen which is super annoying - lock the screen and I cannot receive viop calls. It's lineage so theoretically I can fix but that's not in my forseeable future!