iMessage problems
I can send iMessage using wifi but I can't send pictures using wifi. I have tried this before at other places and it didn't work there either.
iPhone 4S
Per http://support.apple.com/kb/TS2755 :
Issues with sending and receiving MMS
You will need these to send and receive MMS:
- An iPhone 3G or later.
- iOS 3.1 or later.
- A cellular data connection. MMS isn't available if you are using only Wi-Fi.
- A domestic MMS plan from your cellular provider. You may need an international messaging plan to send MMS to an international contact. Contact your carrier for more information.
- A roaming MMS when using a cellular provider's network different from your billing cellular provider's network. Learn more about roaming and contact your carrier for more information.