I HAVE A MY TOUCH SLIDE THAT I ONLY USE WIFI FOR AND HAVE UNLIMITED TALK AND TEXT  EVERYTHING WORKS BUT THE MMS SENDING  I CAN RECIEVE THEM IS THERE A FIX FOR THIS ON TMOBILE  MY IPHONE WAS ASMART PHONE AND EVERTHING WORKED FINE .IS THERE A FIX FOR THIS ?BECAUS I WOULD HATE TO GO BACK TO APPLEI REALLY LIKE THIS PHONE!!!! hELP PLEASE MMS SHOULD WORK HTC  WILL RULE AFTER THIS IS FIXED IN MY BOOK!

Try entering the following under settings/network apns:

MMSC:

https://mms.msg.eng.t-mobile.com/mms/wapenc

You might also need to set up the access point, if so here's the information:

APN: epc.tmobile.com

MMSC: See above

MCC: 310

MNC: 260

APN Type: Internet + MMS

Authentication Type: None

All the fields leave blank.

Please let me know if this work? Because I too have the similar problem, I do have the data plan from tmobile, but I can't receive mms connected to my wifi; which sucks!  Please let me know if it works.  

My friend has an HTC Evo and he doesn't have that problem.

thanks works like a charm!!!

is that the data access point, the mms access point or both?

this worked perfectly! thanks bunches!

i've tried this & it didn't work :( any alternatives ?