EP06 CSIM support

When trying to select ISD-R domain on the SIM card, modem returns CME ERROR: 0
AT+CSIM=42,“01A4040C10A0000005591010FFFFFFFF8900000100”

Opening and closing logic channels with CSIM command work fine.

Any idea on what could be happening?

Hi, EP06 does not support CSIM Telecom CDMA frequency band, please change the SIM card test, I hope it will be helpful to you, thank you.