I ran into something similar.  I have a "Free & Clear Family Plan" on Sprint with free unlimited data. We share it on 3 lines.  Two are TP2, one is an old clam-shell phone.  The user of the clam-shell finally wants to upgrade.  We're past the contract, so I asked about renewing and getting new phones.  Here's what they said:
	Quote:
	
	
		| You can upgrade your phone without changing the plan however the phone should not be from below list of phone which required
 data plans:
 
 • Data Bundle required for 3G/4G:
 1.  HTC EVO™ 4G
 2.  HTC EVO Shift™ 4G
 3.  HTC EVO 3D™
 4.  Samsung Epic™ 4G a Galaxy S™ phone
 5.  Nexus S™ 4G from Google
 
 -    Data Bundled Plan Required:
 =================
 
 1.   BlackBerry® Curve™ 8530 Smartphone
 2.   BlackBerry® Curve™ 9330 Smartphone
 3.   BlackBerry® Bold™ 9650 smartphone
 4.   BlackBerry® Style™ 9670 smartphone
 5.   HTC Arrive™
 6.   HTC Hero™ with Google™
 7.   Palm® Pixie™
 8.   Palm® Pre™
 9.   LG Optimus S™
 10.  Motorola ES400S
 11.  Motorola i1: Data plan required but add-on allowed.
 12.  Motorola XRPT
 13.  Sanyo Zio™
 14.  Samsung Moment™ with Google™
 15.  Samsung Intercept™ with Google™
 16.  Samsung Instinct®
 17.  Samsung Instinct® HD
 18.  Samsung Instinct® s30™
 19.  Samsung Replenish™
 20.  Samsung Transform™
 
 You can order any of the phone except the above list of phone with your
 current plan.
 | 
	
 I just don't get it.  I have a data plan, right?  Anyhoo, I didn't feel like dealing with it, 
so I bought a TP2 on eBay.  We should be able to activate that with no problem, since we already have two of those on the account, right?