Boost Mobile's $50/Month Unlimited Gigs Plan is the least expensive prepaid unlimited voice, messaging and high speed data plan currently available. However like all "unlimited" plans it's not really without limits. Video streaming is degraded to 480p resolution, audio streaming is restricted to 500 Kbps, online gaming data is throttled to 2 Mbps, hotspot is throttled to 128 Kbps after 8 GB is used and data is subject to de-prioritization after 23 GB is used in a month. Boost is not unique in this regard, other carriers' unlimited high speed data plans have similar restrictions.
According to a leaked dealer chanel document I received, Boost will soon let customers partially remove some of the limits on its unlimited plan. Starting "on or about" January 27, Boost will offer a $20/month HD Streaming Buy Up (Video/Music/Gaming) add-on that will increase video resolution to 1080p or better, allow music streaming at up to 1.5 Mps and gaming streams at up to 8 Mps.
The HD Streaming add-on will only be available with the $50/month Unlimited Gigs plan. It will automatically renew each month unless cancelled by the user. Boost cautions that steaming HD video will greatly increase data consumption and that customers using it are likely to reach the 23 GB de-prioritization threshold sooner. Customers who hit the limit and get de-prioritized can renew their plan and add-on early to restore normal speeds.