Resolution
1080 x 2400 px
Weight
171 g
Samsung Galaxy S21 features Samsung Exynos 2100 processor, 8GB RAM with 256GB storage, 6.2" display, 4000 mAh battery, 64 MP & 12 MP & 12 MP main camera.
2" screen. Against the S25, has 50% dimmer display at 1,300 nits compared to S25's's 2,600 nits, and scores 78% lower in performance benchmarks, and has 8GB RAM compared to S25's 12GB, and offers 256GB storage compared to 512GB, and sports a 64MP main camera versus 50MP. Compared to the S23 Ultra, the S21 has 26% dimmer display at 1,300 nits compared to S23 Ultra's's 1,750 nits, while scores 53% lower in performance benchmarks. The S24 Ultra has 50% dimmer display at 1,300 nits compared to S24 Ultra's's 2,600 nits, and the Z Fold 7 has 50% dimmer display at 1,300 nits compared to Z Fold 7's's 2,600 nits.
Design
| Water resistance i | Waterproof (570 others) |
| Weight i | 171 g (5 others) |
| Thickness i | 7.9 mm (78 others) |
| Width i | 71.2 mm (9 others) |
| Height i | 151.7 mm (11 others) |
| Volume i | 85.33 cm³ (1 other) |
| Ingress protection (ip) rating i | IP68 (454 others) |
| French repairability index i | 1 (6 others) |
Display
| Display Type i | OLED/AMOLED (856 others) |
| Screen Size i | 6.2" (24 others) |
| Pixel Density i | 421 ppi (1 other) |
| Resolution i | 1080 x 2400 px (201 others) |
| Refresh Rate i | 120Hz (553 others) |
| Touch sampling rate i | 240Hz (173 others) |
| Brightness (typical) i | 1300 nits (24 others) |
| Has branded damage resistant glass i | ✔ (899 others) |
| Gorilla glass version i | Gorilla Glass Victus (117 others) |
Performance
| Internal Storage i | 256GB (366 others) |
| RAM i | 8GB (300 others) |
| Antutu benchmark score i | 677991 (2 others) |
| Chipset (soc) name i | Samsung Exynos 2100 (2 others) |
| Gpu name i | Mali G78 MP14 (2 others) |
| CPU Speed i | 1 x 2.9 GHz & 3 x 2.8 GHz & 4 x 2.2 GHz (Samsung Exynos 2100) (3 others) |
| Geekbench 6 Result (multi) i | 3339 (Samsung Exynos 2100) (3 others) |
| Geekbench 6 Result (single) i | 1334 (Samsung Exynos 2100) (3 others) |
Cameras
| Megapixels (main camera) i | 64 MP & 12 MP & 12 MP (7 others) |
| Wide aperture (main camera) i | f/1.8 & f/2 & f/2.2 (10 others) |
| Has a dual lens (or multi lens) main camera i | ✔ (1023 others) |
| Megapixels (front camera) i | 10MP (38 others) |
| Has built in optical image stabilization i | ✔ (811 others) |
| Video recording (main camera) i | 4320 x 24 fps (81 others) |
| Has a dual tone led flash i | ✔ (670 others) |
| Number of flash leds i | 2 (668 others) |
| Has a bsi sensor i | ✔ (576 others) |
Operating system
| Android Version i | Android 15 (205 others) |
| Has clipboard warnings i | ✔ (782 others) |
| Has location privacy options i | ✔ (782 others) |
| Has camera/microphone privacy options i | ✔ (794 others) |
| Has mail privacy protection i | ✖ |
| Has theme customization i | ✔ (758 others) |
| Can block app tracking i | ✔ (782 others) |
| Blocks cross site tracking i | ✖ |
| Has on device machine learning i | ✔ (941 others) |
Battery
| Battery Power i | 4000 mAh (65 others) |
| Has wireless charging i | ✔ (483 others) |
| Supports Fast Charging i | ✔ (1155 others) |
| Charging speed i | 25W (83 others) |
| Wireless charging speed i | 15W (129 others) |
| Has reverse wireless charging i | ✔ (252 others) |
| Reverse wireless charging speed i | 4.5W (64 others) |
| Has a removable battery i | ✖ |
Audio
| Has a socket for a 3.5 mm audio jack i | ✖ |
| Has stereo speakers i | ✔ (890 others) |
| Has ldac i | ✔ (275 others) |
| Has A Radio i | ✖ |
| Number of microphones i | 2 (568 others) |
Connectivity & Features
| Release date i | 4 years ago02/11/2021 (2 others) |
| Has 5g support i | ✔ (734 others) |
| Wi fi version i | Wi-Fi 6 (802.11ax), Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n) (198 others) |
| Sim cards i | 1 SIM, 1 eSIM (131 others) |
| Bluetooth Version i | 5.1 (106 others) |
| Has an external memory slot i | ✖ |
| Has usb type c i | ✔ (1132 others) |
| Usb version i | 3.2 (160 others) |
Miscellaneous
| Has a video light i | ✔ (1099 others) |
| Has Sapphire Glass Display i | ✖ |
| Has A Curved Display i | ✖ |
| Has an e paper display i | ✖ |
Similar products
Frequently Asked Questions
How fast does the Samsung Galaxy S21 charge?
At 25W, the Samsung Galaxy S21 is 51% below the category average for charging speed, ranking #685 out of 1061 — see ranking phone products.
How fast does the Samsung Galaxy S21 charge wirelessly?
At 15W, the Samsung Galaxy S21 is 50% below the category average for wireless charging speed, ranking #203 out of 394 — see ranking phone products.
What is the reverse wireless charging speed of the Samsung Galaxy S21?
At 4.5W, the Samsung Galaxy S21 is 42% below the category average for reverse wireless charging speed, ranking #138 out of 206 — see ranking phone products.
How many megapixels does the Samsung Galaxy S21 front camera have?
At 10MP, the Samsung Galaxy S21 is 41% below the category average for front camera megapixels, ranking #846 out of 1430 — see ranking phone products.
How many megapixels does the Samsung Galaxy S21 main camera have?
At 64 MP & 12 MP & 12 MP, the Samsung Galaxy S21 is 40% above the category average for main camera megapixels, ranking #140 out of 1434 — see ranking phone products.
What is the touch sampling rate of the Samsung Galaxy S21?
At 240Hz, the Samsung Galaxy S21 is 37% below the category average for touch sampling rate, ranking #180 out of 391 — see ranking phone products.
What is the AnTuTu benchmark score of the Samsung Galaxy S21?
At 677,991, the Samsung Galaxy S21 is 25% below the category average for AnTuTu score, ranking #416 out of 899 — see ranking phone products.
How big is the Samsung Galaxy S21 battery?
At 4000 mAh, the Samsung Galaxy S21 is 20% below the category average for battery capacity, ranking #927 out of 1439 — see ranking phone products.
How much storage does the Samsung Galaxy S21 offer?
At 256GB, the Samsung Galaxy S21 is 19% below the category average for storage, ranking #443 out of 1441 — see ranking phone products.
Is the Samsung Galaxy S21 lightweight?
Yes. At 171 g, the Samsung Galaxy S21 is 17% below the category average for weight, ranking #331 out of 1418 — see ranking phone products.
What is the multi-core Geekbench 6 score of the Samsung Galaxy S21?
At 3339 (Samsung Exynos 2100), the Samsung Galaxy S21 is 17% below the category average for multi-core Geekbench 6 score, ranking #351 out of 850 — see ranking phone products.
Does the Samsung Galaxy S21 have wireless charging?
Yes, the Samsung Galaxy S21 has wireless charging. Only 38% of phones have this feature.
Does the Samsung Galaxy S21 have an external memory slot?
No, the Samsung Galaxy S21 does not have an external memory slot. This feature is available in 57% of phones.
Does the Samsung Galaxy S21 have a BSI sensor?
Yes, the Samsung Galaxy S21 has a BSI sensor. This feature is found in 47% of phones.
Does the Samsung Galaxy S21 have a 3.5mm headphone jack?
No, the Samsung Galaxy S21 does not have a 3.5mm headphone jack. This feature is available in 52% of phones.
Does the Samsung Galaxy S21 have a dual-tone LED flash?
Yes, the Samsung Galaxy S21 has a dual-tone LED flash. This feature is found in 53% of phones.
Does the Samsung Galaxy S21 support 5G?
Yes, the Samsung Galaxy S21 supports 5G. This feature is found in 54% of phones.
Does the Samsung Galaxy S21 have a built-in radio?
No, the Samsung Galaxy S21 does not have a built-in radio. This feature is available in 45% of phones.
Does the Samsung Galaxy S21 have optical image stabilization (OIS)?
Yes, the Samsung Galaxy S21 has OIS. This feature is found in 63% of phones.
Does the Samsung Galaxy S21 have stereo speakers?
Yes, the Samsung Galaxy S21 has stereo speakers. This feature is found in 69% of phones.
Does the Samsung Galaxy S21 have a multi-lens camera?
Yes, the Samsung Galaxy S21 has a multi-lens camera. This feature is found in 84% of phones.
How does it compare?
How does the Samsung Galaxy S21's charging speed compare to similar phoness?
At 25W, the Samsung Galaxy S21 trails the OnePlus Nord CE4 Lite 5G (80W) by 69%.
How does the Samsung Galaxy S21's main camera megapixels compare to similar phoness?
At 64 MP & 12 MP & 12 MP, the Samsung Galaxy S21 trails the Xiaomi Redmi Note 14S (200 MP & 8 MP & 2 MP) by 68%.
How does the Samsung Galaxy S21's display brightness compare to similar phoness?
At 1300 nits, the Samsung Galaxy S21 leads the Xiaomi Redmi Note 14S (500 nits) by 62%.
How does the Samsung Galaxy S21's multi-core Geekbench 6 score compare to similar phoness?
At 3339 (Samsung Exynos 2100), the Samsung Galaxy S21 leads the Xiaomi Redmi Note 13 4G (1542) by 54%.
How does the Samsung Galaxy S21's touch sampling rate compare to similar phoness?
At 240Hz, the Samsung Galaxy S21 trails the OnePlus Nord CE4 Lite 5G (480Hz) by 50%.
How does the Samsung Galaxy S21's AnTuTu score compare to similar phoness?
At 677,991, the Samsung Galaxy S21 leads the Xiaomi Redmi Note 13 4G (368,064) by 46%.
How does the Samsung Galaxy S21's single-core Geekbench 6 score compare to similar phoness?
At 1334 (Samsung Exynos 2100), the Samsung Galaxy S21 leads the Xiaomi Redmi Note 14S (729 (Mediatek Helio G99)) by 45%.
How does the Samsung Galaxy S21's battery capacity compare to similar phoness?
At 4000 mAh, the Samsung Galaxy S21 trails the Infinix Note Edge (6500 mAh) by 38%.
How does the Samsung Galaxy S21's front camera megapixels compare to similar phoness?
At 10MP, the Samsung Galaxy S21 trails the Xiaomi Redmi Note 14S (16MP) by 38%.
How does the Samsung Galaxy S21's refresh rate compare to similar phoness?
At 120Hz, the Samsung Galaxy S21 leads the Samsung Galaxy A17 4G (90Hz) by 25%.
How does the Samsung Galaxy S21's weight compare to similar phoness?
At 171 g, the Samsung Galaxy S21 leads the OnePlus Nord CE4 Lite 5G (191 g) by 10%.
How does the Samsung Galaxy S21's screen size compare to similar phoness?
At 6.2", the Samsung Galaxy S21 trails the Infinix Note Edge (6.78") by 9%.