Samsung Galaxy A21s is the successor to the Galaxy A20s, which itself is a variant of the popular budget Samsung Galaxy A20 smartphone released in 2019. It comes with versions based on RAM and storage 4GB + 64GB*. The Galaxy A21s is also fitted with a massive 5000mAh battery coupled with 15W fast charge. OS: Android 10. Release date: June 2020. Network Type: 2G/3G/4G Display: 6.5-inch, 720×1600 pixels resolution Processor: Exynos 850 Selfie Camera: 13 MP Rear camera: 48MP quad RAM: 6 GB ROM: 64 GB Battery: 5000 mAh.