PlusUP is a package of extra perks & benefits for your plan. Here's what it includes:

• Extra 20GB 4G LTE / 5G mobile hotspot data
• 2x international data speeds (increase from 128Kbps to 256Kbps)
• HD video streaming at 1080p (increase from SD streaming at 480p)

All of these features are included with T-Mobile's Magenta Plus plan, so if you use these add-on feature frequently then it may be a more affordable option to simply upgrade your line to T-Mobile Magenta Plus.