Compare phones
| Global Score | |
| 69.5 | 76.1 |
| Basic Information | |
| HTC | Samsung |
| Android HTC Sense UI | Android 10 |
| 2014-11-04 | 2020-06-29 |
| 6.21 x 3.10 x 0.30 inches | 6.61 x 3.02 x 0.32 inches |
| 5.47 ounces | 6.81 ounces |
| Black, Blue, Pink, Red and White | Black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| $ 219.00 | $ 194.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 720 x 1280 pixels (HD) | 1600 x 720 pixels |
| -- | IPS LCD |
| 267 pixels per inch | 270 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 8.1 | 7.3 |
| Performance | |
| Qualcomm MSM8939 Snapdragon 615 chipset | Mediatek Helio P35 chipset |
| 64-bit ARM Cortex-A53 (Quad-Core 1500 MHz + Quad-Core 1000 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 2 GB (800 MHz) RAM | 3 GB RAM |
| Adreno 405 (500 MHz) GPU | PowerVR GE8320 GPU |
| 9.45 | 9.27 |
| Storage | |
| 16 GB internal memory | 32 GB internal memory |
| microSD, microSDHC, microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 6.72 | 9.84 |
| Camera | |
| 13.00 MP + 8.00 MP | 16.00 MP + 13.00 MP |
| f/2.20 aperture | f/1.80 aperture |
| 28.00mm focal length | -- |
| -- | 0.33 inches (1/3.06") sensor |
| 1920 x 1080 (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 7.92 | 9.35 |
| Networks | |
| Wi-Fi | Wi-Fi |
| -- | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.4 | 6.7 |
| Battery Life | |
| 2600mAh Li-Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 22.4 hours talk time | -- |
| 4.56 | 5.92 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy A21 is a little bit better than HTC Desire 820, getting a global score of 76.1 against 69.5. Even though the Galaxy A21 is noticeably newer than HTC Desire 820, it's just a little bit thicker and heavier. Galaxy A21 works with Android 10 OS, and HTC Desire 820 works with Android HTC Sense UI OS.
The HTC Desire 820 counts with a much better looking screen than Galaxy A21, although it has a little bit smaller display, a just a bit worse pixel number in each screen inch and a bit worse 1280 x 720px resolution. The HTC Desire 820 has a bit better processor than Galaxy A21, because although it has a smaller amount of RAM memory, and they both have the same number of cores, the HTC Desire 820 also counts with a 64-bit processing unit and an extra GPU.
The Samsung Galaxy A21 takes much better pictures and videos than HTC Desire 820, and although they both have the same (Full HD) video quality and the same video frame rates, the Samsung Galaxy A21 also has a larger aperture for better images and video in low light environments and a camera in the back with more megapixels.
Galaxy A21 has much more storage for applications and games than HTC Desire 820, because it has a SD memory card expansion slot that admits up to 512 GB and more internal memory capacity. The Galaxy A21 counts with a very superior battery life than HTC Desire 820, because it has a 4000mAh battery size.
The Samsung Galaxy A21 not only is the best devices between the ones we are comparing, but it's also the cheapest one, making it an easy choice.
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