Why Samsung Galaxy S21 Has Great Battery Life?

Samsung Galaxy S21 comes with Qualcomm Snapdragon 888. Although the new chipset isn’t as powerful as Apple A14 Bionic in raw benchmarking, it still works well in many situations. It comes with the integrated 5G modem. Compared to the Snapdragon 865, the new Snapdragon delivers three times the performance level per Watt, which makes it more efficient for high-performance utilizations. For high-end smartphones, battery life is an important factor, because chipsets are getting more powerful. The basic Samsung Galaxy S21 has 4000mAh battery with 25W wired charging and 15W wireless charging. It is quite interesting that although the Galaxy S21 comes with the smallest battery capacity, it’s the only one of the three that offers more than 24 hours of battery life for normal uses. We need to get the actual device to test whether the Galaxy S21 could actually deliver longer battery life as promised.

The Samsung Galaxy S20 at 60Hz display refresh rate could reach 12 hours and 12 minutes with normal uses. When the display refresh rate is increased to 120Hz, the battery life takes a major hit at 7 hours and 45 minutes. The Samsung Galaxy S21 has lower display resolution and adaptive refresh rate. It means, the refresh rate can be reduced significantly when displaying static interface to reduce power consumption. Here are reasons why Samsung Galaxy S21 is more efficient:

Samsung Galaxy S21

Full HD resolution

The Samsung Galaxy S20 with its narrow and tall 6.2-inch display has an overkill 1440p resolution. At normal viewing distance, people don’t see much difference caused by the resolution bump. Thankfully, Samsung is being sensible and its new Galaxy S21 has Full HD or 1080p resolution. The lower resolution 1080p panel is definitely more frugal because it has only about 2 million pixels, compared to nearly 3.7 million pixels of the 1440p panel. Based on tests, Full HD displays in the market is around 25 percent more efficient compared to Quad HD display.

5nm chipset

The Qualcomm Snapdragon 888 with Samsung’s 5nm EUV manufacturing process is definitely more efficient than the 7nm Snapdragon 865. Samsung claimed that its 5nm EUB has much smaller chipset footprint for the same level of performance, which is similar to 20 percent power draw.

Samsung Galaxy S21

Integrated 5G modem

Any integrated component is usually more efficient than the dedicated one. The Samsung Galaxy S20 has a separate 5G X55 modem, not included in the Snapdragon 865 chipset. The Snapdragon 888 has an embedded X60 5G modem, which is also manufactured using the 5nm process. This should result in noticeable reduction in power consumption, due to the integrated nature of the modem and the smaller manufacturing process.

More efficient 5G antenna

5G networks transfers a lot of data and because many phone designs cause poor signal penetration, manufacturers may slap multiple antennas to ensure optimum 5G data performance. However, the Samsung Galaxy S21 has low permittivity PI (polyimide) films that ensures better signal penetration. The more efficient antenna consumes less power and it shouldn’t significantly affect battery life.