Hi all,

Twice now, my Fairphone 2 has lost all its charge in about fifteen minutes when I've been using the browser. The first time, I had it plugged into a speaker and was playing iplayer through it, so I didn't notice the alarming heat, focussed on the top of the phone, above the battery, until I investigated the sudden interruption of my listening pleasure.
This morning, I was reading the Guardian, going through quite a lot of pages, when I realised it was getting very hot. I shut it down and took off the back and the heat, again, seemed to be coming from the top unit, above the battery.
I gave it half an hour's charge, turned off, and it has been fine today. I've had to make a couple of calls and have had Nextcloud, Decko and a couple of other apps open. No problems, and the battery seems to be behaving normally.
Has anyone else seen this happen?

@advocatux Thanks, Advocatux. Florian very kindly guided me through my ignorance and it is done now. Appreciate the help.

All done. Thank you again for your help. I'll report back as soon as I notice anything.

I'm trying to install the base baseband firmware and have hit a snag. Should I enter the first command in the computer terminal or the phone terminal? On the computer (which is an Ubuntu 16.04 machine), it gives me 'device not found' and on the phone it gives me 'command not found'.

I know I am probably missing something very basic: I'm a long-time Ubuntu user but not very confident with the command line.

Any pointers would be much appreciated.