I have 2 USIM and 8 USIM.
2 USIM cards was in test phone from the time of receipt.
When i use 2 USIM card at other device(no test phone, embedded device), they work well.
But 8 USIM don't work at other device. They only work at test phone.
How can i use the 8 USIM at other devices?
What is the difference of the USIM?