Fix ESIM Not Working On Galaxy S23 Ultra

We will show you various methods to fix the eSIM not working issue on Galaxy S23 Ultra in this guide. South Korean flagships support Dual SIM Dual Active, which means you can use both 5G SIM cards simultaneously. In addition, it supports the use of both an eSIM and a physical SIM at the same time. For many, this is proving to be a difficult task.


Several Galaxy S23 Ultra users have expressed concern that eSIM is not working on their devices. In addition, the SIM Manager does not work, and the physical SIM has a few problems. According to the SIM manager, the eSIM does not have a phone number assigned to it, whereas the physical SIM shows as unrecognized. You can fix this issue by following this guide if you are also experiencing this issue.

Fix eSIM not working on Galaxy S23 Ultra

The best thing to do is to try each of the below-mentioned workarounds and see which one works for you. Let’s get started with that in mind.

1: Delete Cache Partition

As temporary data accumulates over time, it might interfere with the proper functioning of many system components, including eSIM. In order to get rid of these temporary data, follow the steps below and then take a look at the results.

  • Your device should be powered off.

  • Connect to the computer or plug in USB-C headphones. Press the Volume Up key, then the Power key.

  • Release all three keys when the Android logo appears.

  • Before the Android system recovery menu options appear, an ‘Installing system update’ message will appear for 30 – 60 seconds.

  • Use the Volume down key several times to highlight Wipe Cache Partition and press the Power key to select it.

Wipe Cache Partition

  • Select yes, by pressing the Volume down key.
  • A Reboot system now option appears once the wipe cache partition has been completed.
  • Reboot your device by pressing the Power key.
  • Make sure it fixes the eSIM not working issue on your Galaxy S23 Ultra.

2: Re-Setup eSIM

I would recommend deleting the eSIM and then resetting it from scratch. The following steps could be taken:

  • Go to Settings > Connections > SIM Card Manager.
  • Choose your eSIM from the list and click Remove > Remove.

Re-Setup eSIM

  • Request a resend of the QR code for the eSIM setup from your eSIM carrier.
  • Go to Settings > Connections > SIM Card Manager.
  • Add a mobile plan > Scan the carrier QR code > Scan the QR code now.

SIM Card Manager

  • Make sure it fixes the eSIM not working issue on your Galaxy S23 Ultra.

3: Reset Network Settings

  • This issue can also affect you if your network settings are corrupted. In such cases, you will have to reset the network settings to their defaults. As an example, here’s what you could do:
  • You can reset your settings by going to Settings > General Management > Reset.
  • Go to Reset network settings > Reset Settings > Reset.
  • In the above fix, we discussed how to re-set up your eSIM.
  • See if it fixes the eSIM not working issue on your Galaxy S23 Ultra.

Reset Network Settings

4: Factory Reset

In the event that none of the above methods yielded success, it is recommended that you factory reset your device to its default state. The following steps should be followed after you have taken a backup of all the data on your device:

  • Reset your settings by going to Settings > General Management > Reset.

  • Next, select Factory Data Reset > Reset > Delete all.

 Factory Reset

  • Reset your device from scratch once you have completed this step.

  • Make sure it fixes the eSIM not working issue on your Galaxy S23 Ultra.

5: ReFlash Firmware via Odin

If nothing else works, try flashing the firmware via Odin as a last-ditch effort. Follow our guide on How to Flash Stock Firmware on Samsung via Odin to take a backup of all your data.

6: Get in Touch with OEM

A few Lycamobile eSIM users have tried all the aforementioned tweaks, but none were successful. Ultimately, Samsung was able to resolve this issue by performing the following tweaks. In case you are similarly affected, please contact Samsung as soon as possible and figure out the best course of action.

  • A part that holds internal parts in place was replaced.

  • The internal flex component has been replaced.

  • “Your device’s main board has been replaced (?!).”

There you have it. You should be able to fix the eSIM not working issue on your Galaxy S23 Ultra with these various methods. Let us know in the comments if you have any questions about the aforementioned steps. Our team will get back to you as soon as possible with a solution.


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