Temporary foreign SIM

[lostlucy]

I have a SIM only contract with O2. I have just arrived in Vietnam and as I will be here for about a month it seems worth getting a local SIM just while I am here. I thought because it was a SIM only plan I wouldn't have an issue just switching mine out for a month. When I tried this my phone wouldn't connect to the local network with an error: SIM Network Unlock PIN....
How can I fix this so I can use a local SIM while I am here?

[Cleoriff · Accepted solution]

@lostlucy 

You phone is obviously locked so needs unlocking before it will take a different sim

How to unlock here https://community.o2.co.uk/t5/How-to-Guides/Unlocking-an-O2-phone-to-use-a-different-SIM-card/ba-p/1...

It would have been better had you done the unlock before leaving home. However if you have any problems then maybe @EmilieT  could help?

Best of luck and welcome to the forum

[EmilieT]

Good morning @lostlucy , and welcome to the forum  

The guide @Cleoriff  shared above should help get this sorted, but please let us know how you get on with this and if you need any additional help. I hope you have a great time in Vietnam as well!