In depth comparison and review of HTC 10 and Realme C21. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | HTC 10 | Realme C21 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 145.9 mm | 165.2 mm | Realme C21 has greater height than HTC 10. |
| Width | 71.9 mm | 76.4 mm | Realme C21 has greater width than HTC 10. |
| Depth | 9 mm | 8.9 mm | Realme C21 is narrower than HTC 10. |
| Weight | 161 g | 190 g | HTC 10 is lighter than HTC 10. |
| Body Colour | Glacier silver | Carbon grey | Topaz gold | Cross black | Cross blue | |
| Body Material | Metal | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.417 W/kg | - | |
| Connector Type | Headset jack - mini-phone 3.5mm USB Type-C - 24 pin USB-C |
Micro-USB Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | - | Dual-SIM |
| DISPLAY | HTC 10 | Realme C21 |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | Super LCD 5 | LCD | |
| Screen Size (Display Size) | 5.2" | 6.5" | Realme C21 has larger screen size than HTC 10. |
| Screen Resolution (Display Resolution) | 2560 x 1440 pixels | 1600 x 720 pixels | HTC 10 has better screen resolution than Realme C21. |
| Display Format | QHD | HD+ | |
| Pixel Density | 564 ppi | - | |
| Aspect Ratio | - | 20:9 | |
| Max Brightness | - | 420 cd/m² | |
| Display Features | Curve edge, Display colour personalisation | Mini-drop display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass (scratch resistant glass) | - |
| PROCESSOR | HTC 10 | Realme C21 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 820 | MediaTek Helio G35 | |
|---|---|---|---|
| Clock Speed | 2.2 GHz | 2.3 GHz | Realme C21 has higher clock speed than HTC 10. |
| Processor Core Qty | Quad-core | 8-core | Realme C21 has higher processor core quantity than HTC 10. |
| 64-bit Architecture | Yes | - | HTC 10 has 64-bit architecture. |
| Graphics System (GPU) | - | PowerVR GE8320 |
| MEMORY | HTC 10 | Realme C21 |
|---|
| RAM | 4 GB | LPDDR4X SDRAM - 3 GB | HTC 10 has more RAM than Realme C21. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 32 GB | Both phones have the same internal memory capacity. |
| User Memory | 23 GB | - | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 2 TB | microSD |
| CAMERA | HTC 10 | Realme C21 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 3 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 13 Megapixel | Realme C21 has better camera resolution than HTC 10. |
| Sensor Type | BSI-CMOS | - | |
| Lens Aperture | F/1.8 | F/2.2 | HTC 10 has better lens aperture than HTC 10. |
| Lens Construction | - | 5-element | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | HTC 10 has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Minimum Focal Length (Focal Distance) | 26 mm | - | |
| Digital Zoom | - | 4x | |
| Self-Timer Delay | 10 sec | - | |
| Special Effects | - | HDR | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Burst mode, Panorama, Pro mode, Continuous shot, HYPERLAPSE, RAW mode | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape | |
| Face Recognition (Face ID) | Face detection | - | HTC 10 has face detection. |
| Light Source | Dual LED flash | LED flash | |
| Video Resolutions | 3840 x 2160 (4K) | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | HTC Zoe, Video Pic, HTC UltraPixel Camera 2 | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (2nd Camera) | - | F/2.4 | |
| Lens Element Qty (2nd Camera) | - | 3-element | |
| Camera Functions (2nd Camera) | - | B&W lens |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Lens Element Qty (3rd Camera) | - | 3-element | |
| Camera Functions (3rd Camera) | - | Macro camera | |
| Camera Features (3rd Camera) | - | 4cm macro photography |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 5 Megapixel | Both phones have the same front camera resolution. |
| Sensor Type (Front) | BSI-CMOS | - | |
| Lens Type (Front) | Wide-angle lens | - | |
| Lens Aperture (Front) | F/1.8 | F/2.2 | HTC 10 has better front lens aperture than HTC 10. |
| Lens Element Qty (Front) | - | 3-element | |
| Focus Adjustment | Automatic | - | |
| Special Effects (Front) | Live make-up | HDR | |
| HDR Mode (Front) | Auto HDR mode | - | |
| Camera Modes (Front) | Auto selfie (smile selfie, still selfie) | Time-lapse mode, Beauty mode, portrait mode, AI Beauty, Filter mode, Panoramic mode | |
| Face Recognition (Face ID) | - | Face recognition | Realme C21 has face detection. |
| Video Resolutions (Front) | 1920 x 1080 (1080p) | - | |
| Camera Features (Front) | Optical Image Stabilisation (OIS), Voice selfie, Self timer up to 10 seconds | - |
| BATTERY AND CHARGING | HTC 10 | Realme C21 |
|---|
| Battery Capacity (Battery Size) | 3000 mAh | 5000 mAh | Realme C21 has larger battery capacity than HTC 10. |
|---|---|---|---|
| Standby Time | 456 hours | - | |
| Talk Time | 1620 minutes | - | |
| Run Time Details | Talk: up to 1620 min Standby: up to 456 hrs |
- | |
| Battery Technology | Lithium polymer | - |
| CELLULAR | HTC 10 | Realme C21 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 6.0 (Marshmallow) | Android 10 | |
| User Interface | HTC Sense | Realme UI | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | HTC 10 | Realme C21 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | - | Band 1, Band 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 850, 900 | |
| 4G LTE Band | Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 32, Band 38, Band 40, Band 41 | Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 2300, TDD 2500 | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 5.0 | |
| NFC | Yes | - | HTC 10 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | HTC 10 | Realme C21 |
|---|
| Supported Digital Audio Standards | WAV, AAC, AMR, MP3, FLAC, OGG, MIDI, M4A | - | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, AVI, MPEG-4, 3GP | - | |
| Sound Enhancements | HTC BoomSound Hi-Fi Edition | - |
| FEATURES | HTC 10 | Realme C21 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Ambient light sensor, proximity sensor, digital compass, magnetometer, gyro sensor, motion sensor | Accelerometer, proximity sensor, magnetometer, light sensor | |
| Security Devices | Fingerprint reader | Fingerprint reader | |
| Additional Phone Features | DLNA Certified, AirPlay wireless streaming, sharing media via DLNA, Wi-Fi Miracast, Flip to Mute function, Power Saving Mode, Quiet Mode, Pocket mode, Hi-Res Audio, Motion Launch, Android Sensor Hub, Dolby Audio, HTC Connect, Extreme power saving mode | Super power saving mode, HyperEngine technology, Reverse charging |
| OTHERS | HTC 10 | Realme C21 |
|---|
| Included Accessories | Power adapter | USB cable, power adapter, SIM card removal tool | |
|---|---|---|---|
| Compliant Standards | - | TUV Rheinland |
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