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Sonos Roam 2 speaker troubleshooting

Sonos Roam 2 speaker (Roam 2): release (from the Wikipedia page); original Roam, and a fix for each symptom below.

Release (from the Wikipedia page)
Released May 21, 2024 at $179 as the successor to the Roam, a battery-powered speaker.
Original Roam
The 2021 Roam was $169, rated for about 10 hours per charge and IP56, with a separate charging base sold on the side.

PairingOne sideNo soundDisconnectingNot chargingBattery life

Part of Sonos audio model troubleshooting

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Sonos · microphone

Sonos Roam 2 speaker microphone sounds bad or is not detected

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Model numbers and patterns: Roam 2

Published specification

What is true of this model and changes how you fix it

Official specifications, confirmed IP67 (more rugged than Move 2)
IP67 rated — dustproof and submersible to 1m/3ft for up to 30 minutes, a higher rating than the Move 2's IP56 (splash/spray only). 5000mAh battery rated up to 10 hours (less than the Move 2's 24h, reflecting its much smaller size). Bluetooth 5.2 (older than Move 2's 5.3). Weight 0.95lbs, supports Qi wireless charging.
Type — ultraportable battery speaker (WiFi + BT)
The smallest, most portable Sonos — battery-powered, works on WiFi at home and Bluetooth away, waterproof. Both battery symptoms and Sonos WiFi symptoms apply; its small size means shorter runtime than a Move by design.
WiFi vs Bluetooth
On WiFi it is a full Sonos speaker (app/grouping); on Bluetooth it is a standalone portable. The Roam 2 (unlike the original) has a dedicated Bluetooth button for easier switching.
Charging
Charges by USB-C or an optional wireless charger; if it starts low, it is not being charged fully between uses.

Where these figures were read. sonos.com/en-us/shop/roam-2.html (Roam 2 Tech Specs)

Manufacturer support for this product line. Sonos Support — Product support. Official Sonos setup, network, grouping, playback and home-theater support.

Also read for this model. Wikipedia — Sonos.

Exact questions

Questions that only have an answer for the Sonos Roam 2 speaker

My Sonos Roam 2 keeps switching between WiFi and Bluetooth.+

The Roam moves between your WiFi (at home) and Bluetooth (away), and it can flip if the WiFi signal is weak where you are using it. Use the dedicated Bluetooth button to lock it to Bluetooth when away from a strong network, and keep it in WiFi range at home for full Sonos features. If it drops off WiFi at home, that is a network/signal issue for that spot rather than a speaker fault.