paulii20 wrote:
A week ago my iPhone 13 was stolen. I activated Lost Mode but it is still yet pending since it still has to connect to Wifi. I also blocked my phone through IMEI so that the thieves can’t use it, or that’s what I think it does.
If your carrier blacklisted the IMEI, that will prevent the thieves from getting cellular phone, text messaging, or data service from that carrier – or any other carrier who acts on the first carrier's blacklist.
It won't prevent the thieves from unlocking the phone with your regular passcode to try to take a look at any locally-stored personal or financial data. Hopefully they don't know the passcode – and that will lock them out. Then there is the pending Lost marking to lock them out if the phone connects to the Internet using Wi-Fi.
I want to know if it’s recommended to Erase or Remove my device from all my devices? Would any of these make unlock my phone to the thieves??
Do not remove the phone from the list of devices associated with your Apple ID. That will remove Activation Lock – allowing the thieves to reset your phone and "make it their own."
Mark it as Lost (as you did). Try to remotely Erase it (if you feel that you must). But leave it on your account so that if the thieves do not know your Apple ID and Apple ID password, it will be a brick.
Note 1: If there is any chance that your Apple ID password was compromised, change it now.
Note 2: Sometimes thieves will contact the person they stole a phone from, claiming to be from "Apple Support" or the like, and supposedly wanting to reunite the owner with the lost phone. This is a phishing attempt to get you to remove the Activation Lock, to give them the credentials needed to remove Activation Lock, and/or to get personal and financial information that they can use to scam you further.