Network and connectivity
Data Roaming
Most people call this using data on someone else's network abroad.
Data Roaming allows cellular data when you are connected to a network other than your own carrier's, which is usually what generates unexpected bills abroad.
This setting is present on your iPhone.
- We have this path on file but have not yet confirmed it against an official source.
Where to find it - iOS 12 and later
- Settings
- Cellular
- Cellular Data Options
- Data Roaming
What it does
Turning it off stops data entirely when roaming. Calls and texts may still work and may still be charged. Whether roaming costs anything depends entirely on your plan.
What changes
When it is on
Data works abroad, at whatever your plan charges.
When it is off
No data while roaming. Wi-Fi still works.
Should you turn it on?
Good reasons to turn it on
- You have a plan that includes roaming.
- You need maps and messaging while travelling.
Good reasons to turn it off
- Prevents charges you did not agree to.
- Forces you onto Wi-Fi, which is often fine.
Battery
No real change
Privacy
No real change
Performance
No real change
Cellular data
Costs you something
Storage
No real change
Out of the box: Varies by carrier and region.
Worth reading first
Questions people actually ask
- How do I avoid data charges abroad?
- Turn off Data Roaming before you travel, and use Wi-Fi or a local eSIM plan instead.
If it is not working
- Near a border the phone can roam without you leaving the country.
- An eSIM travel plan is usually cheaper than roaming on a home plan.
- Turn it off before boarding, not after landing.