If you’re using MyCricket Wireless, you can simply download and view the MMS pictures, sent by your friend via http://www.mycricket.com/mms.
You can also directly go to http://otp.mycricket.com/mmbox/otp.html . Don’t forget to put your MDN and Message ID.
Other link available for your convenience:
Still have problem with your MMS? Probably you need to contact Cricket Customer Service.
There are a couple of ways to contact Cricket. To reach Cricket customer service via the telephone, simply dial *611 from your Cricket phone or dial their toll-free phone number at 1-800-CRICKET. For assistance in-person, please visit your local Cricket Store. Visit Cricket Contact Us page if you can’t find any answer.
Quote from Wikipedia:
Cricket Communications, Inc. founded in 1999, provides wireless services to about 3.84 million customers in parts of 25 US states. The company is a subsidiary of Leap Wireless, utilizing its CDMA 1X and 1xEV-DO networks. Cricket uses a flat rate billing method, offering rate plans from $25 to $60 per month before taxes by way of month-to-month contracts only; it does not require credit checks or long-term service contracts as other service providers in the U.S. The company recently launched the first Advanced Wireless Services network, in Oklahoma City.