Cellular Data and the International Day Pass

Hi JHebertWilson,

Thank you for participating in the Apple Support Communities. We understand you'd like to know if it's possible for apps to use cellular data if cellular data is turned off. When you turn cellular data off it restricts all data to Wi-Fi. This article explains more about this: Use cellular data on your iPhone or iPad.

"Turn cellular data on or off 

To turn cellular data on or off, go to Settings, then tap Cellular or Mobile Data. If you're using an iPad, you might see Settings > Cellular Data.

Depending on your carrier and device, you might have additional options listed under Cellular Data Options:

• Enable LTE, 4G, or 3G: You can select what type of network connection to use for voice and data. Learn more about these options. Learn about data options with 5G on your iPhone or iPad.
• Turn Voice Roaming on or off: With CDMA networks, you can turn off Voice Roaming to avoid charges from using other carriers' networks.
• Turn Data Roaming on or off: When you're traveling internationally, you can turn off data roaming to avoid roaming charges. If you have an international data plan, you may need to keep Data Roaming on. Learn more about traveling internationally with your iPhone or iPad.

Depending on your carrier, data roaming might be used if you travel domestically. Contact your carrier for more information about your data roaming policy or other cellular data settings. You can turn cellular data on or off to limit apps and services from using the cellular network to connect to the internet. When cellular data is on, apps and services use your cellular connection when Wi-Fi isn't available. As a result, you might be charged for using certain features and services with cellular data. Contact your carrier for more information about possible charges."

We hope this helps.

Take care.