Yealink Wireless USB Wi-Fi Adapter, Dual Band 802.11ac (WF50) - Black Weight_2.28 lbs it's compatible with both 4G

it's compatible with both 4G LTE and 5G Ultra Wideband signals

- Dual 12MP Rear Camera and Dual 8MP/2MP Front Camera

- S-View interactive window Provides quick access to key phone features and the ability to respond to incoming calls and alarms without opening the cover

even when you're cooking or working out

- This beautiful Smart Cover

Yealink Wireless USB Wi-Fi Adapter, Dual Band 802.11ac (WF50) - Black Weight_2.28 lbs it's compatible with both 4GPlug and Play connection for Yealink VoIP phones to Wi Fi network Compatible with Yealink SIP T27G T41S T42S T46S T48S T53 IP Phone (Version 84) Network Standard: IEEE 802. 11 a n ac, IEEE 802. 11 b g n