4G LTE 3G WCDMA GSM Fixed Wireless Terminal with LCD LED 2 RJ11 Backup Battery for Alarm System PBX Elevator support Caller ID|Fixed Wireless Terminals| - AliExpress
4G vs 2G Battery Usage Test on my Note10+5G Exynos. I work from home & i always use WiFi so i switched to "2G only" to see if there is any effect