Oppo Reno 4 vs Oukitel C21 Pro
| Type | Touch | Touch |
| Dimensions | 159.30 x 74.00 x 7.80 mm | 161.70 x 75.60 x 9.00 mm |
| Weight | 183.00 g | 192.00 g |
| Display size | 6.43" | 6.39" |
| Display | Color / AMOLED 16M colors 60 Hz 1080 x 2400 px (6.43") 409 ppi | Color / IPS TFT 16M colors 60 Hz 720 x 1560 px (6.39") 269 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
 |  |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) |  | 4G: 600 min. (10.0 h) |
| Stand-by (max.) | | 4G: 360 h. (15.0 days) |
| Standard battery | Li-Ion 4020 mAhBuy powerbank
| Li-Ion 4000 mAhBuy powerbank
|
| Quick battery charging | VOOC | |
| Wireless battery charging | | |
| Internal memory | 128 GB, 256 GB | 64 GB |
| RAM memory | 8 GB, 12 GB | 4 GB |
| Memory cards | |  microSD, microSDHC, microSDXC |
| Operating system | Android 10 | Android 11 |
| Interface | ColorOS 7.2 | - |
| Processor | Qualcomm Snapdragon 765G SM7250-AB | MediaTek Helio A25 MT6762D |
| Processor clock | 2400 MHz | 2000 MHz |
| GPU | Adreno 620 | ARM Mali-T880 MP2 |
| Touchscreen | | |
| SAR (10g) | | 1,155 W/kg |
| DualSIM | | |
| SIM cards standard | | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | nd | dual standby |
| Hybrid DualSIM | nd | nanoSIM, microSD |
| Announced | 2Q 2020 | 2Q 2021 |
| Other names | Reno4; PDPM00; PDPT00 | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 1900 2100 | 850 900 1700 1900 2100 |
| LTE standard | FDD LTE: 2100, 1800, 900, 850 TDD LTE: 2600, 2500, 2300, 1900 | FDD LTE: 2600, 2100, 1900, 1800, 1700, 900, 850, 800, 700 |
| Standard 5G | TDD 5G: 4700, 3500, 2500 | |
| CDMA | 850 | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | Standard | Standard |
| Photo sensor model | Sony IMX586 | Sony IMX362 |
| Photo matrix | 48 Mpx | 12 Mpx |
| Sensor size | 1/2 | 1/2,55 |
| Pixel size | 0,8 µm | 1,4 µm |
| Resolution | 8000x6000 px | 4032x3024 px |
| Optical zoom | | |
| Number of lenses | 6 | |
| Field of view | 80 ° | 90 ° |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 3840x2160 px | |
| Video formats | H.264, H.265, MPEG4 - 30 fps | H.263, H.264, MPEG4 |
| Additional | AF, f/1.7 | AF, f/2.2 |
| Second camera | | |
| Camera type | Wide-angle | Depth of field |
| Photo sensor model | | f/2.2 |
| Photo matrix | 8 Mpx | 2 Mpx |
| Sensor size | | 1/5 |
| Pixel size | | 1,75 µm |
| Resolution | | 1600x1200 px |
| Optical zoom | | |
| Number of lenses | 5 | |
| Field of view | 119 ° | 76 ° |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video formats | H.264, H.265, MPEG4 - 30 fps | H.263, H.264, MPEG4 |
| Additional | FF, f/2.2 | FF, GalaxyCore GC02M2 |
| Third camera | | |
| Camera type | Macro | Depth of field |
| Photo matrix | 2 Mpx | 0.3 Mpx |
| Resolution | | 640x480 px |
| Optical zoom | | |
| Number of lenses | 3 | |
| Field of view | 89 ° | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video formats | H.264, H.265, MPEG4 - 30 fps | H.263, H.264, MPEG4 |
| Additional | FF, f/2.4 | FF |
CAMERAS - FRONT
| First camera | | |
| Camera type | Portrait | Portrait |
| Photo matrix | 32 Mpx | 8 Mpx |
| Sensor size | | 1/4 |
| Pixel size | | 1,12 µm |
| Resolution | 4928x6560 px | 3264x2448 px |
| Optical zoom | | |
| Number of lenses | 5 | |
| Field of view | 80 ° | 81 ° |
| Flash | | |
| Dual-colour LED flash | | |
| Video resolution | 1920x1080 px | |
| Video formats | H.264, H.265, MPEG4 - 30 fps | H.263, H.264, MPEG4 |
| Additional | FF, f/2.4 | FF, f/2.2 |
| Second camera | | |
| Camera type | Depth of field | nd |
| Photo matrix | 2 Mpx | nd |
| Optical zoom | | nd |
| Number of lenses | 3 | nd |
| Field of view | 78 ° | nd |
| Flash | | nd |
| Dual-colour LED flash | | nd |
| Video formats | H.264, H.265, MPEG4 - 30 fps | nd |
| Additional | FF, f/2.4 | nd |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | v2.0 | v2.0 |
| HSCSD | | |
| HSDPA | 42.20 Mbit/s | 42.20 Mbit/s |
| HSUPA | 5.76 Mbit/s | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | 1200.00 Mbit/s | - |
| LTE UP | 210.00 Mbit/s | - |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v5.1 | v4.2 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n/ac | v802.11 a/b/g/n/ac |
| WiFi frequencies | 2,4 GHz; 5 GHz | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 Type-C | v2.0 Type-C |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | | 3.5 mm |
| HD Voice | | |
| Sound formats | AAC, AAC+, AMR, APE, FLAC, MID, MKA, OGG, WAV, eAAC+ | AAC, AAC+, ALAC, AMR, APE, FLAC, MID, MKA, WAV, eAAC+ |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | ART | ART |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |