怎么关闭自动切换数据？
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| Situation | With switching on | With switching off |
|---|---|---|
常见问题
Does turning off automatic data switching make the connection drop more often?+
It does not directly make it drop more often, but if the eSIM line briefly loses signal, the phone will simply have no internet instead of hopping to another line — a trade-off worth understanding before turning it off.
Does this need turning off every single trip?+
If the home line carries any roaming risk during that trip, it should be checked and turned off before every departure, since this setting can sometimes be reset back on after an operating system update.
After turning this off, does the eSIM automatically become the primary line?+
No, that is a separate setting. The eSIM must be set as the primary data line separately by hand. Turning this switch off only stops the phone from switching lines on its own — it does not change which line is primary.
What is this menu called on Android if it cannot be found?+
The name varies by manufacturer. Try searching 'data switching' or 'SIM' in the settings app's own search box, since some manufacturers tuck this menu into a separate SIM-management category.
How can it be confirmed that a roaming charge on the bill actually came from data switching?+
Check the date and time of the charge against when you were travelling, and ask the original carrier directly whether it was genuinely a data-roaming charge, since billing detail is something only the original carrier can confirm.