SonyEricsson S500i MMS settings for AT&T

[labrat321]

Sorry if I overlooked this, but unable to find instructions/settings that will work. I bought an unlocked S500i and can not send MMS messages. I am on AT&T. Can someone point me in the right direction for this? Thanks!

[stacy89]

1. Select 'Menu' (right softkey).
2. Highlight 'Messaging' and 'Select' (left softkey).
3. Highlight 'Settings' and 'Select' (left softkey).
4. Highlight 'Picture message' and 'Select' (left softkey).
5. Highlight 'Validity period' and 'Edit' (left softkey), highlight 'Network maximum' and 'Select' (left softkey).