iPhone SE overheats
My iPhone SE overheats all of a sudden and now the battery drains in 3 hours, I have 93% battery life and I don't have any background refresh. Also orange light comes on status bar when I'm making a call and at least 8 times a day I lose all service for 5 minutes. These have all just recently happened since the 17 update. I got the iPhone refurbished on contract from Tesco. What's happening? Thanks in advance!