Just a quick word about how picture messaging works with your 48 SIM.
You need a few things to send or receive picture messages.
1) Internet on your phone. As picture/MMS messages are sent and received via the internet you will need the internet add on for it to work.
2) The correct settings. All the settings you need are here.
3) If you are sending pictures you will need some credit as they are not free. Each picture message you send will cost €0.30. You can see a breakdown of additional costs here.
If after check all of this and are still having problems with sending or receiving pictures then it's time to ask an agent.