SIM card locked

[Mde000]

I'm trying to put my old SIM card in a new phone but it says the SIM card is locked.  What do I do?  I do not have a SIM passcode. 

[mountaindew]

Are you using an iPhone? I read that if you are using one of the recent models, it might automatically be locked with the carrier, in which case you'll have to go and try to sort it out with them first, and see if it's possible to change carriers. 

[softech · Accepted solution]

@Mde000   your old phone likely is still locked to the carrier where you got it from. 

check the exact error message and you can try to get the unlock code accordingly:

If the message is "SIM network unlock PIN"

You have to ask the carrier where you got the phone from for the carrier unlock code. (PM would not be able to help with this) 

If it is a Samsung and if the message is "SIM network PIN blocked. Enter SIM network PUK." , 

call  Samsung 1-800-726-7864, The only info you will need to provide for a master unlock was the IMEI and where the phone was purchased

If the message is “PIN unlock key (PUK)” or "Enter PUK Your SIM cannot be accessed",

open a ticket with PM Support using this direct link:  https://urlshortner.tiia.ai/Oyn1L6

**Monitor your Community inbox (envelope icon on the top right) after the ticket is opened.  CS Agent will reply you there