Chosen Solution
I’m trying to activate my phone but I just get this screen
I have tried plugging into iTunes but that doesn’t work either
It seems the iPhone firmware is corrupted and it needs a factory restore. You will need a computer to perform that and since iTunes doesn’t manage to do it the standard mode you’ll have to put the iPhone into DFU first, https://www.theiphonewiki.com/wiki/DFU_M… . If you have no success and you have a windows based PC you can also try to do the job with http://www.3u.com/