Can I tell if someone has dual sims with me
Does the phone I am on have dual sims
iPhone 13, iOS 16
Does the phone I am on have dual sims
iPhone 13, iOS 16
Your iPhone 13 can use dual SIM/eSIMs
Use Dual SIM on iPhone – Apple Support
It cannot involve anyone else, as you suggested in the title of the question.
The iPhone 13 can utilize one eSIM and one Nano SIM.
iPhone 13 can also use two eSIMs
Can I tell if someone has dual sims with me