When you're traveling abroad and buying a local Sim-card, one of the things you have to verify is that the phones you'll be using is unlocked to any carrier. That means you can actually use any Sim-card and any carrier.
There are few ways to make sure your phone is unlocked:
1. Install a foreign Sim-card in the phone. If your phone is originally from Vodafone in United Kingdom, try to install a Sim-card that doesn't belong to that carrier. The Sim-card can even be not a working Sim-card or not activated. If your phone is locked to the original carrier than you'll be prompt to unlock it either with a code or contact the carrier.
2. Take the phone to a phone shop and ask them to check it for you. Any phone shop can check it quickly and easily these days. Thats also should be free to check.
3. Search online how to check your specific phone model. You might be getting a lot of results but after few minutes of browsing you'll probably find the answer.
Incase your phone is locked, those 3 options I just noted are also the ways to unlock it. If you have any questions you can always ask us, we will be getting you the answers much faster than you think.
DBS Blog Team