The current Boost Mobile $2 Daily Unlimited Plan will no longer be available to users with Android phones. Current Android users on the $2 Daily Plan will be grandfathered at the $2 rate until they switch plans or change to another Android phone.
For Android users, the daily plan is mainly useful when your monthly plan expiration is coming up and you don't have enough money to renew for the full month. By switching to the day plan and adding $10, you get five days of service, which might be enough to tide you over to the next paycheck. Starting Nov. 7, that $10 will only buy three days of service instead of five.
The grandfathering of the $2 plan won't help most users who switch back and forth between monthly and daily as the next switch back to the daily plan will trigger the price increase.
Source: HyperLink (PDF) via Howard Forums