some phones need restart on loss of cellular connection
I use many $40-60 phones as remote security devices for properties. I connect them to a security camera, via WiFi hotspot. I got really into Sony Xperia M2, and a Z1, all 4g/LTE. I had them on Three PAYG. Funny thing happened. Three went down all over the place, engineering works. Total mobile disconnect. Network came back online. Mobile phone connection did not. I had to travel to each property to restart each phone. The phones wouldn’t even ring on incoming call. Total pain. Question: is it only some brands of phone that fall to reconnect on network reappearance, and need a restart? Is it the network causing it? Do you know a decent second hand LTE alternative to the Xperia Z1? Thanks!