When you want to stop using WhateSIM for mobile data, please perform Step (a) and (b) below.Step (a) Go to Device Settings > Connections > Mobile Networks > Turn OFF 'Data Roaming' Step (b) Go to Device Settings > Connections > SIM Manager > Select your regular SIM for mobile dataNotes: Since there are many android versions and devices, your device may have different settings compared to the ones provided by WhateSIM. However, keep in mind that the eSIM usage and settings generally are the same on all devices.
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WhateSIM is a data-only service:If you have your Calls and Messages set to your regular SIM, your operator may still charge you.
If you want to avoid roaming charges on calls and SMS as well, you can turn OFF your regular SIM when traveling abroad.
Please note: with your Primary SIM off, you won't be able to receive SMS messages.