Yes. With mobile GSM data service you can send and receive SMS and MMS via your mobile phone. Communication onboard works exactly like international roaming service, so remember to dial 00 or +, followed by the country code & number you wish to reach.
Please ensure your mobile communication device operates on GSM/GPRS technology. Your mobile phone must allow you to use your phone in a foreign country. Your mobile operator should have an international roaming agreement with OnAir or Aero Mobile. Charges are set by your home mobile operators & and are in line with international roaming rates. Service charges will be invoiced automatically by your local mobile network operator.