December 2017
My Nexus 5X 's current system is 8.0.0, but this happened a few updates ago (in October maybe?).
December 2017
Hello RebeccaMa,
Welcome to the community!
Have you verified that the phone is using the correct APN settings? It's possible they may have been altered during the system update. You can verify those settings here.
Hope this helps
Cheers
December 2017