How to avoid roaming bill shock: the phone settings to check before you fly: Before you fly, decide which line will carry your data, then turn Data Roaming off on your home line, switch off automatic mobile-data switching and limit background data. On an iPhone these settings are under Settings > Mobile Data (Cellular in the US); on Android under Settings > Network & internet or Connections. Check them again after landing.
9 guides on this topic
- Money guideHow to avoid roaming bill shock: the phone settings to check before you fly
A pre-flight routine for iPhone and Android: choose your data line, turn off data roaming on the home SIM, stop background data, then check on landing.
- Money guideRoaming spending caps and usage alerts: how to put a ceiling on your phone bill abroad
Which roaming limits exist, what EU rules require, how to set data warnings on your phone and why a prepaid travel eSIM works as a hard cap on spending.
- Money guideIs Wi-Fi calling free when you are abroad? What it can cost and how to check
How carriers bill Wi-Fi calling abroad, when a Wi-Fi call can still be charged as roaming, how it differs from app calls, and what to test before you go.
- Money guidePhone data in transit: what flights, cruise ships and layovers can cost
Why ship and plane networks are billed outside normal roaming, how to stay off them, when onboard Wi-Fi is worth it and how to cover layovers.
- Money guideFamily trips: how to stop a child's or teen's phone running up roaming charges
Three ways to connect children's phones abroad, the settings that stop roaming and in-app spending, a family ledger, and house rules for a fixed bill.
- Archive guideSix-Hour Layover: Is a Travel eSIM Worth the Cost?
Compare the real value of buying short-stop mobile data against airport Wi-Fi and home roaming. Includes official sources and a practical buying checklist.
- Archive guidePay-As-You-Go Roaming vs Prepaid eSIM for a Weekend
A data-demand threshold test for travelers who only need a little mobile internet. Includes official sources and a practical buying checklist.
- Archive guideDaily Roaming Passes: Calendar-Day Billing Can Change Your eSIM Break-Even Point
A pass billed by local or home-carrier calendar day may cost more than a simple hours-away calculation suggests.
- Archive guideRoaming day pass caps versus prepaid eSIM
A roaming day pass can cost more than a prepaid eSIM when you are billed for many days or hit the pass's daily fair-use cap.