So, theoretically a UT webapp could be used in this situation. I would say, try loging into the rocket chat that you use in morph browser on UT. If that works, then you should be able to get it going in a webapp.
@advocatux I know it isn't software as OTA4 is working like a charm on my main phone which is a BQ 4.5. This one is running OTA4 as well. The one thing I can think is that I took it cycling with me and I got quite wet, although it was in my pocket. Though I have done that a few times. The phone is working, but the screen is blue tinged with graphic lines through it and eventually stops being responsive. It gets hot on the front just above the micro usb charger. It was second hand, so might have had issues anyway and I can't vouch for the battery. I have had the back off and looked at the area where it gets hot, but can't see anything obvious. It seems to be related to the screen driver, but not sure what is getting so hot. The battery connector is near that point.