There are many instances where you might need to unlock your mobile phone to allow you to use it across different mobile phone carriers. This could be because you frequently travel to other countries, or it could be because you want to be able to switch carriers to get the best deals without having to continuously change your device. There is a way that you can unlock your existing phone, or you could switch to a Multi Network Sim Card like the ones available from https://www.lister-communications.co.uk/business-mobiles/multi-network-data-sim-cards instead.
In order to unlock your SIM, you will need to contact your mobile phone carrier. They will be able to supply you with all the instructions that you need to unlock it. You may need to fulfil any contractual obligations that are still outstanding and pay a fee to allow you to continue with this process.
You will need to have your phone’s International Mobile Equipment Identity or IMEI number to be able to unlock your phone. You can find this by checking your mobile phone settings. Next, you will need to provide this to your carrier.
Next, you may need to ask your carrier for an unlock code or allow them to unlock your phone remotely for you. Once your phone has been unlocked, you can then insert a new SIM card from a different carrier into your phone for use abroad.
If you want to avoid all this hassle, you should get a Multi Network SIM.