In Detail Steps
Just read through these posts and you'll see that generally it didn't work. The OP states that for the ones who it didn't work, it was because they "messed up" a setting. I highly doubt that. But feel free to try this and "maybe" have MMS for a few hours. 😉
It does work you just need to follow the steps to the T. I am going to post the steps in DETAIL to make sure you guys do it right. I just sent an mms this morning and still working. The reason I say people are doing a step wrong is because I have done it for 5 people with 5 different ATT accounts and it hasnt stopped working for them. Ok so Ill post the steps now in detail and also edit thefirst thread with these steps.
1. Update the carrier file on your iphone then reboot your iphone. Once iphone reboot update carrier file again and remove sim.
2. Setting-General-Network-Cellular Data AND ENTER ON ALL FIELDS *****except first line in voicemail enter "acds.voicemail"****
APN: wap.cingular
Username:
WAP@CINGULARGPRS.COM (CAPS
Password: CINGULAR1 (CAPS)
MMSC: mmsc.cingular.com
MMS Proxy: 66.209.11.32
MMS Max Message Size: [leave blank]
MMS UA Prof URL: [leave blank]
HIT the home button then leave iphone alone DO NOT REBOOT!!!!
3. insert sim into an mms capable att phone. Make a 1 minute phone call (No need to log into ATT or call ATT).
4. Go to
https://mymedianet.wireless.att.com/ (on your computer) and register for media net while sim is in mms capable phone if it give you an error saying that phone is not capable of media make another phone call until it lets you register it. It will tell you that a text was sent to that phone with a 4 digit pin and it will ask you for the pin. You will receive a text with the pin enter the pin on your computer then hit continue. It will ask you for an email if its the first time you register if it does enter your email then hit continue. After that send a picture (mms) from the non iphone.
5. Log into ATT and under your number if you still see an iphone manually switch it to the mms capable phone. Go to features and change it to a regular text plan not an iphone text plan. (If you currently have family iphone text you will have to change it to the 1500 text plan then change it to unlimited family text (not iphone text plan)
***Your account must say under features "Messaging Unlimited for Families - Shared" (NOT Iphone Text)
6.Remove SIM from non iphone and insert it into the iphone. DO NOT REBOOT IPHONE and also DO NOT GO INTO CELLULAR DATA SETTING. You will now have MMS on your iphone and it wont stop working unless you mess with setting or reboot phone.
TRY THIS AND POST YOUR RESULTS PLEASE