iPhone 7/Plus GPS data usage

[etaleb]

guys - in a 4 hour drive, i used up 80mb of data which seems excessive. I'm wondering if apps like wechat (similar to whatsapp) that run in the background used some data. If I close an app, would it stop using data (even if background usage is enabled)

Also, for some reason, if my cellphone data is off, music app doesn't play my music (it's downloaded music, not streaming). Anybody know why

Thx

 

[etaleb]

anybody seen similar behavior?

 

[Mrbobb]

Probably want to setup Wechat to use data only WHEN IN USE, and not always. Music, if u subscribe to Music Match may mess u up otherwise it shouldn't "go out." Can always go into cellular usage screen and disable the music player from EVER using cellular data.

 

[etaleb]

how do i turn off music match

 

[Minorite]

I think MrBob was referring to this option. Have you ever used it? Also, are you using Music app or some thrid-party app?

Edit: p.s. If you've ever subscribed to iTunes Match and it indeed messed up your music you may need to delete and resync all music.