Questions tagged [usim]

I am writing a sim profile and I need to code EF PNN. As per TS31.102 and TS24.008 it shows that EF-PNN has first byte = Full name for network IEI: '43' second byte = Length of Full name for network Name contents Y bytes = Full name for…

ETSI 102 221 mentions the existence of two transmission protocols：T=0 and T=1. But when I tested my 4g USIM card, according to received ATR, I found that it only supports T=0. So I can't test T=1 related code. One of the sayings I found on the…

I bought new USIM Card. It has not MSISDN written in the MSISDN list (Phone storage = "ON"). I tried to write MSISDN to the USIM card using AT commands of the modem (SIM800X GSM/GPRS HAT). AT+CPBS=? +CPBS:…

When a user consumes data in the Local Break Out (LBO) roaming mode, the actual data usage is not visible AFAIK to the home network. The CAT offers an event for call control but I don't see a functionality to monitor the data usage. Also in the USIM…