At initial specifications flush, the

Galaxy S21 does not vary all that a lot from its

S20 precursor – very same display dimension, battery ability and also electronic camera collection. One check out the

brand-new S21 collection style, nonetheless, what with its

electronic camera island mixing in a smooth blend with the side structure, and also one begins to ask yourself if the distinctions under the hood are greater than the specifications sheet satisfies the eye, however. That is specifically real when it concerns the battery life possibility, and also we are providing the S21 collection benefits prior to their precursors below.

Samsung Galaxy S21 battery life

  • 4000mAh battery
  • 1080p screen vs 1440p on the S20
  • Frugal 5nm chipset with incorporated 5G modem vs 7nm and also standalone on S20
  • Next-gen 5G antenna seclusion movie 

Take the battery device of the S21, as an example whose design number is EB-BG991ABY, noise acquainted? It is in fact the 4000mAh EB-BG980ABY item that is located inside the S20 too, so battery life should have to do with the very same, appropriate? Well, not truly, and also below’s why. 

The FHD (S21) vs QHD (S20) screen

While the Galaxy S20 is outfitted with an excessive 1440p resolution on a somewhat high and also slim 6.2″ screen, Samsung went the smarter route this time around, and is launching the S21 with a 1080p panel. The lower pixel density makes for a much more frugal panel, as there are 1MM+ less pixels to light up and manage with the graphics subsystem. Our own battery tests show that phones with FHD screens perform 20-30% better in terms of battery life than those with QHD or higher screen resolutions when we average out for the battery capacity difference. 

Tap the lower band of that range, and the S21 should outlast the S20 with two hours, hitting a tenner in our browsing and scrolling battery test, all other things being equal. The point is they won’t be equal, however.

The 5nm (S21) vs 7nm (S20) processor

Compared to the second-gen 7nm (7LPP) Snapdragon 865 processor in the S20, made in the TSMC foundry, the 5nm Snapdragon 888 is made using Samsung’s new EUV process. The fact that Qualcomm not only switched nodes from 7nm to 5nm, but also the foundry itself , is a vote of confidence in Samsung’s Extreme UltraViolet (EUV) lithography. 

According to Samsung, its 5nm EUV process offers not only a fifth smaller footprint of the chipset at the same performance, but also about 20% smaller power draw. Alternatively, phone makers can choose to gain a 10% performance increase at the same battery consumption. Given that mobile chipsets are already powerful enough for anything you may throw at them, and the new X1 cores are clocked at the same 2.84GHz as the 865, Samsung is likely to go with the generous power consumption decrease. 

The integrated (S21) vs standalone (S20) 5G connectivity

The 7nm vs 5nm process alone won’t make a significant extra difference in battery life between the two phones, though, as the main power draw comes from the display. The phones’ 5G connectivity battery draw, however, will, as maintaining a link to the 5G network is a battery hog. Why? Well, first off, before Snapdragon 888, only Huawei had integrated 5G system-on-a-chip (SoC) for flagship phones. Qualcomm made do with chipsets like the 765 in the

Pixel 5 or

LG Velvet, which, albeit having the 5G modem as an integral part of the chipset, are a far cry from its 8-series in terms of performance.

With Snapdragon 888, however, Qualcomm managed to finally do what it does best – pair the fastest ARM Cortex cores available with a new powerful Adreno 650 graphics AND fuse them with the

X60 5G modem that is also made on the 5nm process. That alone amounts for a significant drop in power consumption when connected to a cell tower but

Korean media just reported that there will also be improvements in the 5G antenna hardware. 

Next-gen 5G antenna isolation

Fast 5G networks like Verizon’s Ultrawide Band (UWB) mmWave can carry a lot of data at once and fast, but have very bad signal penetration that forces phone makers to slap a bunch of extra antennas all around their handsets just so that the signal can pass through your grip alone. 

The Elec, however, is reporting that Samsung will use the next generation of low permittivity polyimide (PI) films for the 5G antennas in the Galaxy S21 phones. This means easier signal passthrough, and less toll on the battery. Taken individually, all these power draw improvements, with the exception of the lower pixel density, may not amount to much, but as a whole, should provide a healthy boost to the Galaxy S21 battery life from the same 4000mAh battery capacity.

Galaxy S21+ battery life

  • 4800mAh battery vs 4500mAh in S20+
  • 1080p display vs 1440p on the S20+
  • Frugal 5nm chipset with integrated 5G modem vs 7nm and standalone on S21+
  • Next-gen 5G antenna isolation film

For the 6.7″

Galaxy S21+, Samsung went a somewhat various course, probably since the S20+ sales were a shock hit at launch. Not just will it deliver with an FHD rather than QHD screen resolution, as well, much like the S21, however Samsung is utilizing the bigger body to additionally fit a bigger battery contrasted to its precursor. 

Just 200mAh except the gigantic 5000mAh battery in the S20 Ultra, the S21+ pack can catapult it to the top of the Galaxy S21 collection battery life stack, as all various other energy-saving parts – 5nm chipset, incorporated 5G modem and also much better antenna seclusion – additionally put on the S21+ too. 

Galaxy S21 Ultra battery life

  • 5000mAh battery
  • 1440p LTPO with vibrant 120Hz revitalize vs 1440p LTPS w/ fixed 120Hz on S20 Ultra
  • Frugal 5nm chipset with incorporated 5G modem vs 7nm and also standalone on S21 Ultra
  • Next-gen 5G antenna seclusion movie

On initial pass, the top-shelf participant of the

Galaxy S21 family members – the S21 Ultra – would certainly offer the very same crucial power draw benefits we note thoroughly in the S21 area. It will certainly additionally sporting activity the 5nm

Snapdragon 888 or Exynos 2100 cpus with incorporated 5nm 5G modems and also brand-new, a lot more economical antenna products.

The crucial element for better Galaxy S21 collection battery life when contrasted to the S20 designs – FHD rather than QHD screen resolution – nonetheless, is missing out on from the formula. Given that the S21 Ultra is showing off the very same 5000mAh battery item as the S20 Ultra, and also the very same high screen pixel thickness, the only battery life gains contrasted to its precursor should originate from the 5nm chipset and also 5G antennas, right?

Well, not truly, as this moment about, its QHD screen will certainly be of the even more economical LPTO range, not the LTPS panel with fixed 120Hz revitalize located in the S20 Ultra, which alone would certainly total up to a 15-20% lessened power draw. When we include the vibrant refresh price that LTPO enables which just utilizes 120Hz when it matters – i.e. when surfing and also scrolling, or throughout user interface computer animations – the battery cost savings might be as substantial as having a lower-res screen. 

This write-up claims 6.8″ 144Hz on the Ultra and asks about LTPO. We can confirm LTPO as well as 6.8″, we believe 120Hz with another interesting attribute…

— Ross Young (@DSCCRoss) October 28, 2020

Still, provided the enhanced S21+ battery ability, it will certainly be really intriguing to examine if the S21 Ultra design will certainly defeat the others in battery life much like its precursor in 2015 did. What do you believe?