EC25 Dual Sim Mode


I’m new to Quectel and working on EC25 schematic design, there is an option to use a secondary sim card holder,
but in hardware and reference design, there is not any help for how to use a second sim holder,

on EC25 there is only USIM2_VDD, are other pins the same as USIM1?
Do I have to change only USIM1_VDD to USIM2_VDD for the secondary sim holder?

there is another question, I’m using an 8pin Sim connector, how to connect USIM_Precence to the sim holder? is there any specific pin inside of sim holder? which pin should I connect it to?

I look forward to your reply,

EC25 does not support dual USIM, you can contrast it with EG91 which supports dual USIM
Quectel_EG91_Series_Hardware_Design_V2.1.pdf (1.3 MB)