Recently, some people over at Howardforums on grandfathered/classic plans have discovered that their $20/month 5GB Preferred Android Web data plan was replaced with a $5/month 5GB "Pref Android Web Reduced" data plan. Details are as follows:
-$5/month for 5GB. Throttles after 5GB although some users have reported no throttling at all.
-Only works for Grandfathered and Classic plans, NOT Value plans.
-Get by calling 611 on your T-mobile phone and saying "cancel" at the prompt to reach the retentions/loyalty department.
-Loyalty CSR called it "Bridge to Value Preferred Web" and described it as a way of giving classic plan members a sample of Value cost savings.
-Despite the name, it does not require you to switch to Value at anytime, nor was I forced to extend my contract.
-This reduced data plan is not eligible as a choice for getting an upgraded smartphones. Upgrading a line with the $5 plan will change the line back to the $20 plan. It's not clear whether you add the $5 data plan on a line that has upgraded recently.
-This is not like T-zones/Web2Go in that it WILL work with any Android phone. I don't know about other types of phones.
My post on the Howardforum thread
Some other T-mobile discounts worth looking into: