How to Turn Data Roaming On or Off on iPhone (Step by Step)

Data Roaming is a single toggle, but where it lives changes depending on whether you're running one line or Dual SIM — and if the toggle is missing entirely, that's actually your carrier's decision, not a bug. Here's the exact path for each setup.

Key Takeaways

- On a single-SIM or single-eSIM iPhone: Settings > Cellular > Cellular Data Options > Data Roaming (Apple Support, 2026).

- On Dual SIM or Dual eSIM: Settings > Cellular, tap the specific line, then Cellular Data Options > Data Roaming, since each line has its own toggle.

- If the Data Roaming toggle doesn't appear at all, your carrier has disabled or doesn't support it on that plan — this needs to be fixed on their end, not in your settings.

How do I turn Data Roaming on or off on a single-SIM iPhone?

Go to Settings > Cellular, make sure Cellular Data is on, then tap Cellular Data Options and toggle Data Roaming. This is the setting that lets your phone use cellular data outside your carrier's home network — turning it off is exactly how you avoid unexpected roaming charges when traveling on your home plan.

How is this different on Dual SIM or Dual eSIM?

With two active lines, Data Roaming is set per line, not globally. Go to Settings > Cellular, tap the specific number you want to configure, then Cellular Data Options, and toggle Data Roaming for that line (Apple Support, 2026). This matters if you're running a travel eSIM alongside your home line — see our Dual SIM guide for how the two lines interact.

Why is the Data Roaming toggle missing from my settings?

If you don't see the toggle at all, that's a carrier-side restriction, not a phone problem. Apple's own support documentation confirms Data Roaming is controlled by your carrier, and if it's missing entirely, your carrier has disabled or doesn't support roaming on that specific plan or SIM profile — contacting your carrier directly is the only way to resolve this.

Should I turn Data Roaming on for a travel eSIM?

Usually yes, and it's worth checking specifically for a travel eSIM, since some providers require Data Roaming to be enabled on that line even though you're technically "roaming" onto local partner networks in your destination country by design. Check your specific provider's setup instructions if data doesn't connect after installation — see our cellular data troubleshooting guide for the full fix list.

What does Data Roaming actually control?

It permits your phone to use cellular data when you're in a region not covered by your carrier's own network, connecting instead through a partner network. Leaving it off is the default safety setting for avoiding roaming charges on your home carrier's plan; turning it on is necessary any time you actually want data outside your home network's coverage.

Frequently asked questions

Does turning off Data Roaming also block calls and texts?

No — Data Roaming specifically controls cellular internet access. Calls and texts on some plans can still work while roaming depending on your carrier's specific plan terms, independent of the data toggle.

Will Data Roaming turn back on automatically after I travel?

No — it stays exactly as you set it until you change it again, so it's worth checking after a trip if you want it off for regular use at home to avoid any confusion the next time you travel.

Can I have Data Roaming on for my travel eSIM but off for my home line?

Yes — on Dual SIM, each line's Data Roaming setting is independent, which is exactly the setup most travelers want: roaming enabled on the travel eSIM, disabled on the home line.

Does this setting exist the same way on Android?

The concept is the same, though the exact menu path differs by manufacturer — generally under Settings > Network & Internet > SIMs, then the specific SIM's data roaming toggle.

Sources

• Apple, About cellular data roaming options for your iPhone and iPad, retrieved 2026-07-09, https://support.apple.com/en-us/109037