How to Check Your Roaming Data Usage on an iPhone

3
Tap the Voice Roaming switch. Voice Roaming allows you to use data for phone calls while away from your home network.
- Using Voice Roaming may result in fees.
4
Tap the Data Roaming switch. This will apply the Voice Roaming concept to your messaging as well.
- You can incur SMS fees while using this feature.
5
Tap the International CDMA switch. CDMA provides coverage in areas of the world where your service provider has an agreement with CDMA carriers in the region. ^{[1]
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- Turning this on may result in fees.

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When traveling internationally, it's best to have your service provider unlock your phone so you can use international SIM cards for the best service.

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International roaming fees can be substantial. Make sure you check with your service provider before using these services.

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