Yes, 5G generally uses more battery than 4G, though the gap depends heavily on your phone’s hardware, the type of 5G signal in your area, and how strong that signal is. In the worst cases, a phone connected to 5G can draw roughly twice the power of one on a stable 4G connection. In the best cases, newer phones with efficient modems have narrowed the difference to something most people wouldn’t notice during a normal day.
Why 5G Draws More Power
5G radios do more work than their 4G counterparts. They communicate with cell towers using wider channels of radio spectrum, process data at higher speeds, and often maintain connections on multiple frequency bands simultaneously. All of that requires more energy from your battery.
A particularly power-hungry setup is called dual connectivity, where your phone links to both a 4G tower and a 5G tower at the same time to boost speeds. Research from Linköping University measured the power draw of this mode and found it peaks at around 4,200 milliwatts, compared to roughly 2,285 milliwatts for a 4G-only connection. That’s nearly double the power consumption at peak load. You won’t sustain that ceiling constantly, but any time your phone is actively downloading or streaming over dual-connectivity 5G, it’s working significantly harder than it would on 4G alone.
Signal Strength Matters More Than You’d Think
The single biggest factor in 5G battery drain isn’t the technology itself. It’s how hard your phone has to work to find and hold a 5G signal. In areas with spotty 5G coverage, your phone constantly searches for a usable 5G connection, locks onto one briefly, loses it, falls back to 4G, then tries 5G again. Each of those handoffs costs energy, and the cycle can repeat dozens of times per hour.
This search-and-switch behavior can drain your battery faster than either a solid 5G connection or a solid 4G connection would on its own. If you’ve noticed your phone dying noticeably faster after moving to a new area or traveling through rural stretches, inconsistent 5G coverage is a likely culprit. Switching your phone to “LTE only” mode in those situations can meaningfully extend your battery life.
Not All 5G Is the Same
There are three broad flavors of 5G, and they don’t all hit your battery equally.
- Low-band 5G operates on frequencies similar to 4G. It covers wide areas but isn’t dramatically faster. The battery impact compared to 4G is relatively modest.
- Mid-band 5G (sometimes marketed as “5G UC” or “5G+”) uses higher frequencies that deliver noticeably faster speeds. It draws more power than low-band but offers a reasonable trade-off for most users.
- Millimeter-wave (mmWave) 5G is the ultra-fast, short-range variant found in dense urban areas and stadiums. It requires the most power because the signal degrades quickly over distance and through walls, forcing the phone’s antenna array to work harder to maintain a connection.
Most people in most places connect to low-band or mid-band 5G. If you’re rarely near mmWave towers, the extreme end of 5G battery drain doesn’t apply to you.
Newer Phones Handle It Better
The early 5G phones from 2020 and 2021 were notoriously power-hungry because their modems were essentially bolted onto chip designs originally built for 4G. Since then, modem efficiency has improved substantially with each generation.
Qualcomm’s latest flagship modem, the Snapdragon X80, includes a fifth-generation power-saving system and a dedicated AI processor that manages the radio connection. It predicts when data transfers are about to happen and powers down 5G components during idle moments, then wakes them in milliseconds when needed. The modem also uses a feature from the latest 5G standard that lets the phone skip unnecessary check-ins with the cell tower, reducing the radio’s active time. These aren’t marketing gimmicks. Each generation has delivered measurable improvements in how long a phone lasts on 5G compared to its predecessor.
If you’re using a phone released in 2024 or later, you’re getting a meaningfully better 5G battery experience than someone with a phone from 2021, even on the same network in the same location.
When to Turn Off 5G
Disabling 5G and locking your phone to 4G makes sense in a few specific situations:
- Weak or inconsistent 5G coverage. If your phone frequently bounces between 5G and 4G, forcing it to stay on 4G eliminates the energy wasted on searching and switching.
- Long days away from a charger. When you need every bit of battery life and don’t need fast download speeds, 4G is the safer bet.
- Older 5G phones. If your device is from the first couple years of 5G (2020 to 2022), the efficiency penalty is steeper, and switching to 4G can add meaningfully to your screen-on time.
On most Android phones, you’ll find this toggle under Settings, then Network, then Preferred Network Type. On iPhones, go to Settings, then Cellular, then Cellular Data Options, and select Voice & Data. Choosing “LTE” disables 5G entirely, while “5G Auto” lets the phone use 5G only when it won’t significantly reduce battery life.
The Practical Difference in Daily Use
For most people with a recent phone and decent 5G coverage, the real-world battery difference between 5G and 4G amounts to roughly 30 minutes to an hour of screen time over a full day. That’s noticeable if you’re already stretching to make it to bedtime, but not dramatic enough to justify permanently disabling 5G if you benefit from the faster speeds.
The calculus changes if your coverage is poor, your phone is older, or you spend a lot of time in fringe areas where the signal is unstable. In those scenarios, 5G can cut meaningfully into your battery life, and switching to 4G is a simple fix that costs you very little in everyday browsing and streaming performance. 4G networks are mature and fast enough for nearly everything most people do on their phones.