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
The 3G4G Blog: VoLTE, Battery Issues and Solutions
Incredible Battery Life - Apple's iPhone 4: Thoroughly Reviewed
Does 4G connection drain your battery faster?
How to Ensure a Successful Migration from 2G and 3G to 4G LTE | Digi International
Battery Life - Samsung Epic 4G Review: The Fastest Android Phone
We tested the smartphone battery life on 3G, 4G, and 5G — and one drains it much
PDF) On the impact of 2G and 3G network usage for mobile phones' battery life
We tested the smartphone battery life on 3G, 4G, and 5G — and one drains it much faster
Here's how 5G could be impacting your iPhone's battery life - 9to5Mac
What Do All Those Gs Mean in Wireless Service?
Here's how 5G could be impacting your iPhone's battery life - 9to5Mac
Connectivity - LTE-M vs NB-IoT, Coverage, Providers and Roaming : Digital Matter Support
3Gto4G | Omnitracs
Solved An important feature of tablets is battery life, the | Chegg.com
Battery Life and the Nexus Wireless Charger - Google Nexus 5 Review
On the Impact of 2G and 3G Network Usage for Mobile Phones' Battery Life
iPhone 6s achieves same run time with a smaller 1,715 mAh battery
3G Vs. 4G Vs. 5G: Mobile Data Speeds Comparison [2017] – Trak.in – Indian Business of Tech, Mobile & Startups
Do Mobile Batteries Drain Faster On Mobile (Cellular) Data Than On Wifi?
What takes more battery life, between 3G and 4G? - Quora
Which? says iPhone 7 has worst battery-life of all current flagship smartphones - 9to5Mac