ESIM not working when first SIM activated on fairphone4

Apps & Core Settings
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1

Hello, i am currently in vietnam and have a secondary esim on my fairphone4 running iode os.

It is a prepaid esim, it first did work fine, but stopped working after i got out of the airport.

Interestingly, it works as soon as i disable my home sim card.

I used this device with iodeos in combination with other esim before and did not have this problem.

So it seems that I either:

  1. Have installed the esim to the “wrong” slot?
  2. Had a software update break this

Any idea on how to fix this?

I am on iode 6.10 with my fp4 currently.

2

Screenshot_20260208-181002_OpenEUICC
Screenshot_20260208-181002_OpenEUICC1080×2340 109 KB

Dual SIM is ticked in OpenEUICC.

I wonder if the slot mapping is the key here..?

Though I do not want to change things here without knowing, as i can’t reinstall the esim if anything happens.