In depth comparison and review of Realme C21 and DORO 8100. 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 | Realme C21 | DORO 8100 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 165.2 mm | 156 mm | Realme C21 has greater height than DORO 8100. |
| Width | 76.4 mm | 72.99 mm | Realme C21 has greater width than DORO 8100. |
| Depth | 8.9 mm | 9.2 mm | Realme C21 is narrower than Realme C21. |
| Weight | 190 g | 167 g | DORO 8100 is lighter than Realme C21. |
| Body Colour | Cross black | Cross blue | Grey | |
| Waterproof (Water-resistant) | - | - | |
| IP rating | - | IP54 | |
| Repairability Index | - | 6.7 (out of 10) | |
| SAR Value | - | 1.12 W/kg (body), 0.39 W/kg (head), 2.84 W/kg (limb) | |
| Connector Type | Micro-USB Headset jack - mini-phone 3.5mm |
Headset jack - mini-phone 3.5mm USB Type-C - 24 pin USB-C |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Single-SIM |
| DISPLAY | Realme C21 | DORO 8100 |
|---|
| Display Type | LCD display | - | |
|---|---|---|---|
| Display Technology | LCD | - | |
| Screen Size (Display Size) | 6.5" | 6.1" | Realme C21 has larger screen size than DORO 8100. |
| Screen Resolution (Display Resolution) | 1600 x 720 pixels | 1560 x 720 pixels | Realme C21 has better screen resolution than DORO 8100. |
| Display Format | HD+ | HD+ | |
| Aspect Ratio | 20:9 | - | |
| Max Brightness | 420 cd/m² | - | |
| Display Features | Mini-drop display | - |
| PROCESSOR | Realme C21 | DORO 8100 |
|---|
| Processor Type (CPU) | MediaTek Helio G35 | Unisoc | |
|---|---|---|---|
| Processor Number | - | SC9863 | |
| Clock Speed | 2.3 GHz | - | |
| Processor Core Qty | 8-core | - | |
| Graphics System (GPU) | PowerVR GE8320 | - |
| MEMORY | Realme C21 | DORO 8100 |
|---|
| RAM | LPDDR4X SDRAM - 3 GB | 2 GB | Realme C21 has more RAM than DORO 8100. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 32 GB | Both phones have the same internal memory capacity. |
| Supported Flash Memory Cards (Expandable Memory) | microSD | microSDHC, microSD, microSDXC - up to 128 GB |
| CAMERA | Realme C21 | DORO 8100 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 3 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 13 Megapixel | Both phones have the same camera resolution. |
| Lens Aperture | F/2.2 | - | |
| Lens Construction | 5-element | - | |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | 4x | 4x | Both phones have the same digital zoom. |
| Special Effects | HDR | - | |
| Camera Modes | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape | Portrait mode | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps | - | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost | QR-code scanner |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 2 Megapixel | 2 Megapixel | Both phones have the same second camera resolution. |
|---|---|---|---|
| Lens Aperture (2nd Camera) | F/2.4 | - | |
| Lens Element Qty (2nd Camera) | 3-element | - | |
| Camera Functions (2nd Camera) | B&W lens | - | |
| Special Effects (2nd Camera) | - | Bokeh effect |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 2 Megapixel | 2 Megapixel | Both phones have the same third camera resolution. |
|---|---|---|---|
| Lens Aperture (3rd Camera) | F/2.4 | - | |
| Lens Element Qty (3rd Camera) | 3-element | - | |
| Camera Functions (3rd Camera) | Macro 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. |
| Lens Aperture (Front) | F/2.2 | - | |
| Lens Element Qty (Front) | 3-element | - | |
| Special Effects (Front) | HDR | - | |
| Camera Modes (Front) | Time-lapse mode, Beauty mode, portrait mode, AI Beauty, Filter mode, Panoramic mode | - | |
| Face Recognition (Face ID) | Face recognition | - | Realme C21 has face detection. |
| BATTERY AND CHARGING | Realme C21 | DORO 8100 |
|---|
| Battery Capacity (Battery Size) | 5000 mAh | 3000 mAh | Realme C21 has larger battery capacity than DORO 8100. |
|---|---|---|---|
| Standby Time | - | 450 hours | |
| Talk Time | - | 1380 minutes | |
| Run Time Details | - | Talk: up to 1380 min Standby: up to 450 hrs |
|
| Battery Technology | - | Lithium polymer |
| CELLULAR | Realme C21 | DORO 8100 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 10 | Android 11 (Go edition) | |
| User Interface | Realme UI | - | |
| Intelligent Assistant | - | Google Assistant | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, BeiDou |
| COMMUNICATIONS | Realme C21 | DORO 8100 |
|---|
| Data Transmission | FDD-LTE, TDD-LTE | GPRS, HSDPA, HSUPA, 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 | Band 1, Band 2, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 850, 900 | 2100, 1900, 850, 900 | |
| 4G LTE Band | Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | Band 1, Band 2, Band 3, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 4.2 LE | |
| NFC | - | Yes | DORO 8100 has NFC reader for mobile payments. |
| MEDIA | Realme C21 | DORO 8100 |
|---|
| Supported Digital Audio Standards | - | WAV, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), M4A, M4R | |
|---|---|---|---|
| Supported Digital Video Standards | - | MKV, RMVB, FLV, AVI, MOV, 3GP, MP4 |
| FEATURES | Realme C21 | DORO 8100 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
|---|---|---|---|
| Sensors | Accelerometer, proximity sensor, magnetometer, light sensor | Accelerometer, proximity sensor, hall sensor, light sensor | |
| Security Devices | Fingerprint reader | - | |
| Additional Phone Features | Super power saving mode, HyperEngine technology, Reverse charging | SOS button, software updates FOTA (Firmware Over The Air), HD Voice, ICE (In Case of Emergency) function |
| OTHERS | Realme C21 | DORO 8100 |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool | Charging stand | |
|---|---|---|---|
| Compliant Standards | TUV Rheinland | IP54, HEARING AID M3/T3 |
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