Why does my iPhone 6 keep going to a black loading screen?

My phone randomly goes black with a loading screen every 2 min

Update to the latest iOS 11.2

  • Why does my Wi-Fi keep going out? I have a Netgear as my Wi-Fi and i have a window 7 toshiba computer i think the problem is coming from the laptop because my iphones and andriods and everything else tht uses Wi-Fi works. But my laptop works for a certain length of time and the Wi-Fi will just cut off in the middle of doing something, it first has a yellow trigangle and it said no network found. Is there any suggestions on fixing this or anyone know how to fix it. Oh and also when i press it sometimes says limited access.
  • Why does my stright talk iphone 5 keep going from 3g to 1x? Ok i got an iphone 5 on the 45 stirhgt plan and it don't do it all the time just here and there and if only satys for a little wile and sometimes if i turn my phone off and on it will quit but it will go from 3g to 1x and i don't know why it keeps doing that could anyone know why and what i can do and if thats normal or not thanks
  • Why does my iphone keep going over my data? I check my data at least once every day or every other day when i go on it when i'm not home.today i checked it and i wasn't on anything and has everything closed and it told me i used 188.02 of 200. I got home about an hour later and i got a message from att saying i went off my data by 7. I don't know how it keeps doing this. Or why? When i'm home i'm connected to Wi-Fi. Why is it doing this cuz i don't want to bay a $300 phone bill again Iphone 4
  • Why does my bill keep going up? I have an iphone 5s and i have unlimited everything and i'm on contract! However my bill keeps going up quite high and i never call anyone or hardly text why is this?