Can you put your working sim card in a iphone with bad imei?

Can you put your working sim card in a iphone with bad imei?

Sure but you will not be able to make calls nor text since the phone has been blacklisted.

What he said… You can put the SIM in the phone, but it won't do anything. Changing the SIM doesn't remove the blacklist of the IMEI. You'd have to take care of whatever caused the blacklist, such as return the phone to the person it was stolen from, or pay off the bill attached to the phone.