hi, I am using AG521REU module to test LTE network.
my jio and opencell simcard is not working getting error. if I use Vodafone Sim card, Sim card is detected but not register to the network.
[2024-04-25 13:11:23:138_S:] ATI
[2024-04-25 13:11:23:215_R:] ATI
[2024-04-25 13:11:23:215_R:] Quectel
[2024-04-25 13:11:23:215_R:] AG521REU
[2024-04-25 13:11:23:215_R:] Revision: AG521REUAAR01A01M4G_OCPU
[2024-04-25 13:11:23:215_R:] OK
/* Use AT+GSN to query the IMEI of module */
[2024-04-25 13:11:23:334_S:] AT+GSN
[2024-04-25 13:11:23:420_R:] AT+GSN
[2024-04-25 13:11:23:420_R:] 860864050001286
[2024-04-25 13:11:23:420_R:] OK
[2024-04-25 13:11:23:422_S:] AT+QURCCFG=“URCPORT”,“uart1”
[2024-04-25 13:11:23:499_R:] AT+QURCCFG=“URCPORT”,“uart1”
[2024-04-25 13:11:23:499_R:] OK
/* Use AT+CPIN? to query the SIM card status : SIM card inserted or not, locked or unlocked */
[2024-04-25 13:11:24:023_S:] AT+CPIN?
[2024-04-25 13:11:24:116_R:] AT+CPIN?
[2024-04-25 13:11:24:116_R:] +CME ERROR: SIM not inserted
/* Make sure SIM card is unlocked */
[2024-04-25 13:11:28:256_S:] AT+CLVL=?
[2024-04-25 13:11:28:337_R:] AT+CLVL=?
[2024-04-25 13:11:28:337_R:] +CLVL: (0-5)
[2024-04-25 13:11:28:337_R:] OK