In order to have functionnal MMS and DATA (internet), you need to configure your APN.
If it's not possible to edit your APN, then you need to update your iOS version to 8.3 (current version from Apple).
Step-by-step APN configuration :
English version
1. Insert your Public Mobile SIM card into your unlocked iPhone.
2. Tap “Settings”
3. Tap “Cellular”
4. Tap “Cellular Data Network”
5. Change your APN values to match the table below:
*Only update the fields that are circled. Leave every other field empty
Internet tethering could be also shown as Personal Hotspot
If I answered your question, please accept my post, as the solution.
