Do Mobile Batteries Drain Faster On Mobile (Cellular) Data Than On Wifi?
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Does Wifi Consume More Battery than 3G or 4G LTE? [2023]
Battery Life - Anand Reviews the Apple iPhone 3G
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