BBCWatcher
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I'm not sure you understand, so I'll repeat: there are two switches in iOS and Android devices: mobile data, and mobile data roaming. You can leave mobile data turned on all the time if you wish, and it still wouldn't incur roaming charges unless you also have the mobile data roaming switch turned on (the second switch). Leave that second switch turned off, and there are no mobile data roaming charges. Don't turn that second switch on, ever.Indeed accidentally leaving on data roaming is easy to do. Like if you go into a place with mobile reception but no wifi (maybe because you don't know the password for the wifi), you turn your mobile data on.
Switch to prepaid mobile service, and there's no bill after you drain your balance. You're not borrowing mobile service using your personal credit. The vast majority of the world's cellular mobile service users have prepaid arrangements, not postpaid.
Rely on your mobile phone for navigation assistance and maps? No problem. Use offline maps. Google Maps and HERE WeGo both offer offline mapping functions. You can download whatever map(s) you need while on Wi-Fi -- before your trip, at the airport, at the hotel, etc. -- set your waypoints (including your "home base" so you can get back), then you're all set for your walking, hiking, or whatever other daily adventure you have exploring the foreign land.
Many postpaid carriers allow subscribers to disable data roaming via their online accounts, a phone call to customer service, and/or USSD codes -- those special codes such as #123* you dial to control various service functions. USSD codes can be added to phone contacts lists/address books for fast dialing.
Dual SIM phones are available, including now for iOS (with caveats). Such phones allow you to have a low cost "global roaming" prepaid SIM (for example) and keep the "home" SIM's roaming data switch shut off permanently, preferably at the carrier end.
Android phones let you completely shut off an application's use of data while it's in the background, and that's helpful in most cases. iOS has even better controls to limit application data use.
There are very reasonable solutions here, at least for the subsequent times this problem could occur.
OK. And if he doesn't mind more such bills (or bigger) in the future, he's free to ignore all of the above advice.My dad just decided to pay it and not try to reduce it.
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