![OK, I know this doesn't make sense, but set your cellular to use only 3G. Even when you are using WiFi. It will make huge difference in battery life. : r/GalaxyS21 OK, I know this doesn't make sense, but set your cellular to use only 3G. Even when you are using WiFi. It will make huge difference in battery life. : r/GalaxyS21](https://i.redd.it/us2klkq6dyl81.jpg)
OK, I know this doesn't make sense, but set your cellular to use only 3G. Even when you are using WiFi. It will make huge difference in battery life. : r/GalaxyS21
![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 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](https://preview.redd.it/smsbf6oyajn81.png?auto=webp&s=1062f4549932c6eab26c050581a40a6e107c7a4e)
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
![SIM WiFi Dongle, Long Battery Life 4G USB Modem Automatic Search Connect High Speed Internet for Notebook for Laptop(American Version) : Amazon.com.au: Computers SIM WiFi Dongle, Long Battery Life 4G USB Modem Automatic Search Connect High Speed Internet for Notebook for Laptop(American Version) : Amazon.com.au: Computers](https://m.media-amazon.com/images/I/51Yj3T4FjxL._AC_UF894,1000_QL80_.jpg)