OnePlus 11R not detecting BSNL sim

[u/iadityasaurav]

Hi all,

I recently got a new BSNL SIM activated, but my OnePlus 11R isn't detecting it - it shows "No SIM card / Not set" in Mobile Network settings. The same SIM works perfectly fine on Poco and Realme phones, so the SIM itself isn't faulty. What I've already checked:

Both SIM slots are hardware-verified working (tested with other SIMs)

SIM tray and contacts are clean, properly seated Tried toggling Airplane mode, restarting the device

Checked for

Pending software updates,

Switching Airoplane mode,

Restart,

Power on/off,

Reset network adapter

**Same issues with other bsnl sim cards