Do you mean you have the same esim on both phones but normally activated on the burner phone except when you need it on the unmodified one w/o access to burner phone?
I can have multiple free esims with my operator. Since I have my auth-phone in airplane most of the time, I don't care about two ringing phones (or the small privacy caveat that comes with sharing the same phone number across multiple devices).
I can have multiple free esims with my operator. Since I have my auth-phone in airplane most of the time, I don't care about two ringing phones (or the small privacy caveat that comes with sharing the same phone number across multiple devices).