New corporate plan, old eSIM still hanging on the device
eSIM is bound to a specific profile install, not to the device. Within one provider it usually carries over, between providers it does not.
Try this first
- 1Ask the old provider to release the eSIM binding before you cancel. Some leave the profile installed but inactive, which causes confusion.
- 2On the device: Settings > Mobile network > select the old eSIM > Remove. Then activate the new one via QR code or provider app.
- 3On dual-eSIM iPhones: pick deliberately which line is "primary" for data and which for calls. You can switch, but not automatically.
- 4With number porting: only activate the new eSIM after the port date. Otherwise you activate on a number that moves the next day, leaving the device in limbo.
- 5Test call, SMS, and mobile data right after activation. SMS especially (for MFA fallback) gets forgotten and sometimes only works after a device reboot.
When to bring us in
A batch of 20+ devices switching at once: have the provider deliver eSIM QRs in bulk and run a rollout hour. Beats a week of one-off tickets.
See also
- Work and personal apps blur together on the same phoneAndroid Enterprise and iOS-with-Intune can enforce a work profile, isolating business apps in a separate container.
- Setting up Microsoft 365 on a new phoneOutlook, Teams, and OneDrive run smoothest if you install Authenticator first and sign the others in afterwards.
- Moving Authenticator to a new phoneMicrosoft Authenticator has built-in cloud backup. Run it before wiping the old device, otherwise everything has to be re-added by hand.
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