On this page we compare specs HTC U21 Qualcomm SDM765 Snapdragon 765G (7 nm) with HTC Desire 820 Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53), we compare external dimensions, compare screens and performance, the amount of RAM and memory for storing media data, battery capacity and characteristics of photo cameras, compare the presence of various sensors and functions.
Hardware and OS | HTC U21 | HTC Desire 820 |
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Operating system | Android v10 (Q) | Android 4.4.2 (KitKat), upgradable to 6.1 (Marshmallow); Sense UI 7 |
Processor | Qualcomm SDM765 Snapdragon 765G (7 nm) | Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53) |
Chipset | | Qualcomm MSM8939 Snapdragon 615 (28 nm) |
RAM | 8 GB | |
GPU | | Adreno 405 |
Internal Storage | 256 GB | |
Internal memory | | 16 GB, 2 GB RAM |
External memory | | microSD, up to 256 GB (dedicated slot) |
Display | HTC U21 | HTC Desire 820 |
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Type | IPS LCD | LCD |
Size | 6.8 inches | 5.5" inc |
Resolution | 1080 x 2400 Pixels | 720 x 1280 px |
Protection | | Corning Gorilla Glass 3 |
Touchscreen | Yes, Capacitive Touchscreen, Multi-touch | capacitive touchscreen |
Screen-to-Body Ratio | | 67.2% |
Display area | | 83.4 cm2 |
Display aspect ratio | | 16:9 (height:width) |
Pixel Density | 378 ppi | 267 PPI |
Colors | | 16M |
Connectivity | HTC U21 | HTC Desire 820 |
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Network support | 5G , 4G , 3G, 2G | |
Dual SIM | Dual SIM, GSM GSM | |
SIM size | SIM1: Nano, SIM2: Nano | |
USB connectivity | Mass storage device, USB charging | |
2G Network | | GSM 850 / 900 / 1800 / 1900 |
3G Network | | HSDPA 850 / 900 / 1900 / 2100 - EMEA, Asia |
4G Network | | LTE band 3(1800), 7(2600), 8(900), 20(800) - Europe |
Wi-Fi | Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, hotspot |
Network | | GSM / HSPA / LTE |
SIM card | | Nano-SIM |
Bluetooth | Yes, v5.0 | 4.0, A2DP, aptX |
Edge | | Yes |
GPRS | | Yes |
GPS | Yes, with A-GPS, Glonass | Yes, with A-GPS, GLONASS |
NFC | Yes | Yes (optional) |
Speed | | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
USB | | microUSB 2.0, USB Host |
Camera | HTC U21 | HTC Desire 820 |
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Front camera resolution | 32 MP, f/2.0, (wide), 1/2.8", 0.8µm) | |
Camera features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
Flash | Yes, LED Flash | |
Autofocus | Yes | |
Video recording | Yes | |
Main camera | | 13 MP, Single |
Specs | | 13 MP, f/2.2, 28mm (wide), AF |
Features | | LED flash, HDR |
Video | | 1080p@30fps, 720p@60fps |
Selfie camera | | 8 MP, Single |
Multimedia | HTC U21 | HTC Desire 820 |
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Audio jack | 3.5 MM | |
Loudspeaker | Yes | |
3.5 mm Jack | | Yes |
Radio | | FM radio |
Design | HTC U21 | HTC Desire 820 |
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Colours | Green, White | |
Colors | | Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tangerine White, Saffron Grey, Flamingo Grey, Blue Misty, Monarch Orange |
Dimensions | | 157.7 x 78.7 x 7.7 mm |
Weight | | 155 g |
Battery | HTC U21 | HTC Desire 820 |
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Capacity | 5000 mAh | |
Type | Lithium Polymer | |
Battery capacity | | 2600 mAh, Non-removable Li-Po |
Battery life | | Stand by time- Up to 424 h (3G) Talking time- Up to 22 h 24 min (3G)
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Other | HTC U21 | HTC Desire 820 |
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Fingerprint sensor | Yes | |
Fingerprint sensor position | Rear | |
Other sensors | Accelerometer, Gyro, Proximity, Compass, SAR | |
Release date | | 2014, September |
Sensors | | Accelerometer, proximity, compass |