You can already use Sonos with a hotspot. But the controller app has to run on a different device to that which is providing the hotspot. So you need two devices: one to provide the hotspot, and one -- attached to the hotspot WiFi -- to control the Sonos players. This isn't a controller limitation. It's a function of the way phone hotspots work.
Xfinity WiFi - Connecting Your Devices to Xfinity WiFi Tap WiFi. Make sure WiFi is set to ON. If WiFi is set to OFF, Tap the Wi-Fi toggle switch to turn on Wi-Fi. Once WiFi is turned on, wait a moment as your Android phone detects the WiFi networks in range. Find xfinitywifi from the list of available networks and tap it. Turn your Windows 7 laptop into a WiFi hotspot - PC Ninja Mar 01, 2011 How To Connect a Computer To a Mobile Hotspot
Lenovo Laptop Wifi Hotspot - Free downloads and reviews
Free WiFi Hotspot - wirelessly share any internet connection Recognized as #1 WiFi Hotspot Software Free WiFi Hotspot Turn your laptop into Wi-Fi Hotspot and share Internet with any devices. Share 3G/4G USB adapter and all types of Internet connection. No more Overpaying for Costly Connections. No Need of Buying Other Hardware Devices. Easy to Use, setup in Seconds. Absolutely free. No trials or limitations.
How to Create WiFi Hotspot in Windows - 3 Ways
Mobile Hotspot Setup | Mobile WiFi | Cricket Wireless The Mobile Hotspot feature is available on eligible plans for $10/month. Every device you connect will use the high-speed data from your rate plan's allowance unless you're connected to Wi-Fi. High-speed data usage for Mobile Hotspot is combined with data usage from your mobile phone. Download Baidu WiFi Hotspot 188.8.131.52374 for Windows