Least Expensive Unlimited Cell Phone Plans

UNI Cell: 
Costs
$60 Unlimited Voice/Text/Data Plan
$65 With tax


Actual Network Carrier:  AT&T.  For example, sending a text message via email: "To send a text message to another UNI^SM Wireless customer from email, place your friend's 10-digit UNI^SM Wireless phone number followed by @txt.att.net in the "To" or address field."  I also spoke with their customer service and asked the same question, they also indicated AT&T was the carrier.


Questions:  Visual voicemail?  iPhone 3g or 2g.  Access to the full AT&T network?  Any other network? Roaming?  Same map as AT&T?  


iPhone compatibility:   Article referencing iPhone on UniCell

Contact: 425-697-4886 M-F 9am-6pm PST

SIMPLE Mobile  Coverage Map
Costs:
$40 3g Unlimited Voice/Text Data Plan (4G is $60/month)
$44 With tax

Iphone compatibility: No.

Actual Network Carrier:  T-Mobile.  When programming the MMS features on the iPhone settings, the support notes references: "MMSC: http://smpl.mms.msg.eng.t-mobile.com/mms/wapenc"


Questions:  Visual voicemail? iPhone 3g or 2g?  Access to the full T-mobile network?  Any other network?  Roaming?  


Boost Mobile




Actual Network Carrier:  Sprint.  Unlike other providers which were difficult to find carrier information on, Boost Mobile has a WikiArticle describing it's entire pre-paid business model with Sprint.