Original topic:

Dual SIM - Main SIM stopped working

(Topic created: 03-27-2026 06:31 AM)
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ScottZed
Constellation
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After about 12 hours after install my main line SIM 1 stopped connecting and went to emergency calls only. My second line for eSIM 2 is connecting but the service is going up and down. No network issues are reported for SIM 1 by carrier. I am in a strong coverage area I have been many times before. Please advise. 
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USBetaModerator3
Beta Moderator
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Hello,

Weโ€™re sorry for the inconvenience youโ€™re experiencing.

To help the team accurately identify the cause of this issue, we kindly ask that you submit an Error Report immediately after reproducing the problem so that the relevant system logs can be captured.

1. Open Samsung Members โ†’ One UI Beta Program โ†’ Beta Feedback.
2. Select Error reports and attach any relevant screenshots or screen recordings (if available).
3. Make sure โ€œSend system log dataโ€ is enabled before submitting.

Important: For accurate log collection, please submit the report within 3 minutes of reproducing the issue and do not kill the task of the Samsung Members app until you receive notification that the error has been sent (about 5 minutes)

Your report will greatly assist the team in analyzing and improving the Beta experience.

Thank you for your continued support.

Best regards,
One UI Beta Team

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MikeDelia
Galaxy
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Might be as simple as pull your SIM 1. Restart phone and let eSIM 2 take preference on phone configuration.

The reason I say this is because these phones need an initial configuration startup for whatever carrier you're on. Being that you have two sims I'm guessing it's possible you have two different carriers so let The phone start up with only one SIM active and it will configure the phone for that carrier.
If that works then add the SIM1 back into the tray.

Otherwise the next step I would take if that doesn't work would be to reset network settings.
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usermn9vcLlnZ3
Asteroid
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I'm after getting on beta. Every reboot says it wants to do dual esim. In a network I'm not part of can't turn off dual esim
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star50
Galaxy
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Trying deleting the Esims and then read downloading them see if that helps

Calvin L B.
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