You can:

• Avoid automatic synchronization of your apps:
Android: Settings > Accounts > More > Disable automatic sync.
Apple: Settings > General > Background refresh.

• Limit operational system updates to WiFi :
Android: Settings > Data Usage > More > Background Data Restriction.
Apple: Settings > iTunes and App Stores > deselect “Cellular Data”.

• Restrict application updates to WiFi :
Android: Settings > Data Usage > More > Background Data Restriction.
Apple: Settings > iTunes and App Stores > deselect “Cellular Data”