Average range of Small cell is 30,000 square feet (0.689 Acres).

Green pins represent Sprint Magic Box small cells with coverage upto 30,000 sqft.

Devices that work with Sprint Magic Box:

Smartphones:
iPhone 6 and newer
Galaxy S4 and newer
HTC One A9 and newer
LG G2 and newer

Tablets:
Galaxy Tab S2 and newer
iPad Mini
iPad Air 2
iPad Pro

Mobile Broadband Devices:
Mobile Hotspots
LTE Enabled Routers
Any units that support 2.5 GHz frequency (Band 41)