Your SIM can send and receive SMS messsages worldwide.

To send a text message, enter the phone number in exactly the same way as when you make a phone call (see Making Calls for more details):

SMS Text Messaging
Please note that text messaging cannot be expected to be 100% reliable. Text messages can be delayed, corrupted, or sometimes not delivered at all. We recommend that if your
message is urgent or critical that you always call rather than text.

Network Text Messages
You may receive some welcome messages or information messages from the local networks as you travel. The information contained within these messages does not relate to your Mobell service. Please simply ignore these messages and delete them to keep your inbox clear. Messages relating to your service will always clearly show the sender as “Mobell”.