EE in the UK. My phone works spot on but everything seems to be going wrong on hers.
When i click on messages, it takes a long time for them to load up when you select the contact. (even when wifi is on)
I have restored it but everything is still the same!
I put my SIM card in her M8 and it worked fine and hers in mine and it didn't connect.
Could the message issue be because she has over 40,000 texts?