The second SIM/eSIM slot only has 2G (and no mobile data and no 4G/5G)

Expected Behavior

• The first SIM slot works as it should with an eSIM.
• The second SIM/eSIM slot should work like the first one.
• So the second slot should be able to handle phone calls, SMS, mobile data etc. for 2G / 3G / 4G and 5G.

Current Behavior

SIM/eSIM slot 2 (logical slot 1) only supports 2G calls and 2G SMS (and VoWiFi), but neither 2G cellular data nor anything related to 4G or 5G works.

Steps to Reproduce

The test should be done with eSIMs, as physical SIM cards are always slot 1 (logical slot 0). Shiba has only one physical SIM slot.

• Activate an eSIM on SIM slot 1 (logical slot 0) and everything works great, including 2G / 4G / 5G and VoWiFi, VoLTE and mobile data.
• Either activate a second eSIM or map the existing one (e.g. with OpenEUICC) to SIM slot 2 (logical slot 1).
• The eSIM that is on slot 2 (logical 1) can now only do 2G telephony and 2G SMS, everything else like mobile data or anything that has to do with 4G/5G doesn't work.
• If two eSIM cards are activated, the one mapped to slot 1 (logical 0) always works correctly and the other mapped to slot 2 (logical 1) can only do 2G calls and 2G SMS (no mobile data or 4G/5G).

I have attached a screenshot of the Phone Service where the same eSIM is shown once in SIM slot 1 (logical 0) and another time in slot 2 (logical 1).

Device information

/codename shiba /version lineage-23.2 /date 2026-05-24 /kernel 6.1.145-android14-11-gec45f20f38ea-ab15260282 #1 Mon Apr 20 12:39:01 UTC 2026 /baseband g5300i-250909-251024-B-14326967 /mods microG, OpenEUICC

I have read the directions.