Why Cant I Send Picture Mail? After Switching My Iphone To Net 10?

Your MMS/wap settings are still set to whatever carrier your phone was on before you switched.

Heres an excerpt from NET10s support FAQ. 

"Do I need to manually program the phone?

In order for your phone to work, you will need to update your APN (Access Point Name) found in your phone’s data settings. Some services, such as MMS or Browsing, may not work if you cannot make the required change to your handset.

The necessary settings can be found in the red Activation Card that came with your SIM, or by visiting our Phone Programming Guide.

How do I update my iPhone APN settings?

If you have an AT&T compatible iPhone 3G, 3GS, 4 or 4S running iOS 4.0 or higher you may click on the link below and we can attempt to update your APN settings.
This link may not work based on limitations and configuration settings you may have on your iPhone, please contact the manufacturer or point of purchase for further support regarding your phone. Your phone must be connected to Wi-Fi in order to continue.

1. 1. While on Wi-Fi, open Safari and type in iapnupdatetfdata.net10.com.
2. 2. Tap Install.
3. 3. Tap Install Now.
4. 4. Enter your pass code if prompted.
5. 5. Tap Done.
6. 6. At this point you can exit your browser, turn off Wi-Fi, and re-boot your phone.
7. 7. With Wi-Fi off, access Safari to ensure your data connection is working.

 

Please note that this will not enable MMS (Multi-Media Messaging) and we do not support this service for iPhone customers. 
By clicking this link you are agreeing to our Terms and Conditions.iapnupdatetfdata.net10.com"

 

http://www.net10sim.com/support.php

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[automotive mechanic and phone modding enthusiast]