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
What Are the Pros and Cons of WiFi Calling? | weBoost
Nielsen Studies WiFi Vs. Cellular Usage Patterns
Amazon.com : Apple iPad (10th Generation): with A14 Bionic chip, 10.9-inch Liquid Retina Display, 256GB, Wi-Fi 6 + 5G Cellular, 12MP front/12MP Back Camera, Touch ID, All-Day Battery Life – Yellow :
WiFi Performance & Battery Life - The HP TouchPad Review: webOS on the Big Screen
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What's Draining Your iPhone Battery? - Techlicious
iPhone 12 Pro battery life test complete: bad news for gamers! - PhoneArena
Do Mobile Batteries Drain Faster On Mobile (Cellular) Data Than On Wifi?
The Importance of Average Power Consumption to Battery Life
Amazon.com : Apple iPad (10th Generation): with A14 Bionic chip, 10.9-inch Liquid Retina Display, 64GB, Wi-Fi 6 + 5G Cellular, 12MP front/12MP Back Camera, Touch ID, All-Day Battery Life – Blue :
Do Mobile Batteries Drain Faster On Mobile (Cellular) Data Than On Wifi?
Why Aranet? - Aranet
VOSKER Solar Powered Wireless 4G LTE Cellular Outdoor Bullet Security Camera with Rechargeable Battery V150-US - The Home Depot
Get better battery life being on wifi all day compared to 3 hours being on cellular. Coming from the 22 ultra to the fold 4 amazing experience so far!! : r/GalaxyFold
The pros and cons of WiFi calling: A comprehensive guide
Energy Consumption Comparison: WiFi vs LTE | Download Scientific Diagram