I think I'm getting the same thing on mine. I can't download the pics that my friend's txt me so I can view them.

 

I found this searching for "authentication via the proxy server was unsuccessful" which seems they are related. I changed the below setting and it seems to have fixed it.

proxy: mvno.tracfone.com

Just left the proxy "not set" and now the data works fine

Straight Talk Wireless Forums • View topic - Data not working on Samsung Galaxy S2

Note: I'm on straight Talk

 

In case this hasn't been resolved yet...

iPhones have undergone a software update for iMessage. iMessage is a (stupid) service that allows free messaging between iPhones without requiring your carrier to add that feature. It has broken how Android phones recieve picture messages from iPhones.

Have your iPhone user turn off iMessage (enabled by default?) and that will fix the problem.

my wife is iPhone, i am Android. We have family messaging on our phones (with 3 other lines also used) so iMessage is just a wasted feature. It causes nothing but problems.

 

Not the solution to the problem, but an alternative messaging programm well worth using is 'Whatsapp'


Uses data connection to send sms/pics/sound etc. Available to download on android/appstore/blackberry. You can send messages to anyone that has whatsapp for free, including people overseas.

SMS will slowly fade away I feel...

 

I second whatsapp. It's more like blackberry messenger for non BB.