If you want to get your data or MMS working then here are the best android settings for Ultra Mobile. These should also work on Windows Phone and iPhone!
• Name – Ultra
• APN – wholesale
• Proxy – blank
• Port – blank
• Username – blank
• Server – blank
• MMSC – http://wholesale.mmsmvno.com/mms/wapenc
• MMS Proxy – blank
• MMS Port – blank
•MCC – 310
• MNC – 260
• Authentication Type – blank
• APN Type- default,supl,mms