We already know that the Samsung Galaxy S21 will be powered by Samsung's Exynos 2100 chipset, not Qualcomm's flagship Snapdragon 888 outside the US. While generally less impressive, Samsung's proprietary chip has one key advantage.

According to Twitter leaker Anthony, the Galaxy S21 with Exynos 2100 will have improved battery life; while it will last slightly longer than Snapdragon-powered models, the battery's durability will be significantly better than Samsung's Galaxy S21 will be significantly better than the S20.

The Samsung Galaxy S20's battery life was not the strongest, with the Snapdragon 865 model lasting just 9 hours and 31 minutes in tests, and according to Android Central, the Exynos 990 model performed slightly worse, but but not by much. So the news that the Galaxy S21's battery life has been extended is welcome.

According to leaks, the Exynos 2100 will improve the battery life of the Galaxy S21 by up to 35% over the previous model, and the Snapdragon 888 model by about 15%.

Of course, given the mediocre performance of the Galaxy S20 series in our tests, that means the Galaxy S21 won't be a battery powerhouse; the 15% increase will only add about 90 minutes to the 9.5-hour battery life, and while the improvement not great in the grand scheme of things.

Nevertheless, if the Exynos 2100 model really does bring a 35% improvement, it could mean a lot to Samsung. The standard Galaxy S21 model, which will have a 4,000 mAh battery as it did last year, could even make our best smartphone battery life list.

We'll have to wait and see what Samsung says when it launches the Galaxy S21 on January 14 and how well it stands up to testing when it goes on sale at the end of the month.

Typically, Samsung Galaxy S phones with Exynos chips perform worse than their Snapdragon-powered counterparts. Benchmark leaks indicate that it is not as powerful as the Snapdragon 888, but this level of battery boost is a positive change. It could even be a turning point for Samsung's own-brand cell phone chips, even if it still has a ways to go.

Other Galaxy S21 features expected include a newly designed rear camera module that curves into the upper left corner of the phone and features three lenses. The Ultra model is expected to feature a 108MP sensor and two telephoto cameras with 3x and 10x optical zoom The Galaxy S21 Ultra, like Samsung's Galaxy Note 20 Ultra, will feature an LTPO panel that dynamically adjusts refresh rate

The Galaxy S21 Ultra is expected to feature an LTPO panel that dynamically adjusts refresh rate.