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T-Mobile, Like Verizon, Also Tells Users to Turn Off 5G to Save on Battery Life

T-Mobile has been offering the advice in its support pages for the Samsung Galaxy S20 and S21, which undercuts the carrier's 5G marketing hype.

 & Michael Kan Principal Reporter

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Like Verizon, T-Mobile has also been telling users to turn off their phone’s 5G connectivity as a tip to save on battery life. 

Despite T-Mobile’s marketing talking up 5G, the carrier’s support pages for the Samsung Galaxy S20 and S21 have been pointing out the benefit of deactivating the 5G technology on a smartphone.

The support pages go as far to say a user can “Toggle from 5G/LTE to 2G” as a battery saving-tip. In other words, you should downgrade your phone’s connectivity to cellular technology originally launched three decades ago. 

Tips to save on battery life
Support page for Samsung Galaxy S20 Ultra 5G (Credit: T-Mobile)

The advice is also pretty explicit. In Verizon’s case, the carrier merely posted a now-deleted tweet on Sunday that implied deactivating the 5G would prevent a battery drain. T-Mobile’s support pages just flat out say toggle down the technology. 

The messaging flies in the face of T-Mobile’s marketing around 5G, which has been hyped up as a game-changer for phone data speeds. Christian Smith, the founder of cellular consumer advocate site CoverageCritic.com, noticed the support pages and posted about them on Twitter to point out the hypocrisy. 

T-Mobile didn’t immediately respond to a request for comment. However, the company has been offering the same advice for 4G smartphones, including Apple’s iPhones. The tips also recommend users can shut off the device's Wi-Fi, Bluetooth, and GPS, in addition to lowering the phone’s brightness to conserve battery life. So essentially, T-Mobile is telling users to turn off non-essential items to keep their phone going.

Samsung itself has also warned consumers that 5G can guzzle more energy on a Galaxy smartphone. “You may notice that your phone's battery drains faster than usual while you are connected to a 5G network. This is a limitation of the current 5G networks, and will be improved as the networks expand,” the company wrote in a support page.

About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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