"[Question] Anyone elses phone started locking automatically whilst playing? [iPhone]"

#PokemonGO: Hi guys,I usually have Pokemon Go open in battery-saver mode during my commute to and from work in order to get the kilometers in, however over the past few days my phone has been automatically locking after about a minute or so, which is very annoying as I think this stops me accumulating any distance! Has anyone else experienced this?I have an iPhone 7 running on iOS11. I've had both the phone and iOS11 for a few months and this has only just started happening. I'm 99% sure I haven't changed any settings in my phone.Can anyone help please? via /r/pokemongo http://ift.tt/2AhWg7b