One number at a time can use cellular data. To change which number uses cellular data, follow these steps:
- Go to Settings.
- Tap either Cellular or Mobile Data.
- Tap Cellular Data. Tap the number you want to use cellular data.
If you turn on Allow Cellular Data Switching, then while you're on a voice call on your voice-only number, that number automatically switches to use voice and data.* This lets you use both voice and data while on the call.
If you turn off Allow Cellular Data Switching and you're active on a voice number that isn't your designated cellular-data number, then cellular data won't work while you're on the call.
To turn on Allow Cellular Data Switching, follow these steps:
- Go to Settings.
- Tap either Cellular or Mobile Data.
- Tap Cellular Data.
- Turn on Allow Cellular Data Switching.
