Oppo A7 vs Realme C51
| Type | Touch | Touch |
| Dimensions | 155.90 x 75.40 x 8.10 mm | 167.20 x 76.70 x 7.99 mm |
| Weight | 168.00 g | 186.00 g |
| Display size | 6.20" | 6.74" |
| Display | Color / IPS TFT 16M colors 720 x 1520 px (6.20") 409 ppi | Color / IPS TFT 16M colors 90 Hz 720 x 1600 px (6.74") 260 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
 |  |
| Additional display | | |
| Protection of the secondary display | | |
| Standard battery | Li-Ion 4230 mAhBuy powerbank
| Li-Po 5000 mAhBuy powerbank
|
| Quick battery charging | VOOC | SuperVOOC |
| Wireless battery charging | | |
| Internal memory | 32 GB | 64 GB, 128 GB, 256 GB |
| RAM memory | 3 GB, 4 GB | 4 GB, 3 GB, 6 GB |
| Memory cards |  microSD, microSDHC, microSDXC up to 256 GBBuy memory card | microSD, microSDHC, microSDXC up to 2000 GBBuy memory card |
| Operating system | Android 8.1 Oreo | Android 13 |
| Interface | ColorOS 5.2 | realme UI T Edition |
| Processor | Qualcomm Snapdragon 450 | Unisoc Tiger T612 T7225 |
| Processor clock | 1800 MHz | 1820 MHz |
| GPU | Adreno 506 | ARM Mali G57 @650 MHz |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | dual standby | dual standby |
| Hybrid DualSIM | | |
| Announced | 4Q 2018 | 3Q 2023 |
| Other names | CPH1901 | RMX3830 |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 2100 | 850 900 2100 |
| LTE standard | FDD LTE: 2600, 2100, 1800, 900, 850, 800 TDD LTE: 2600, 2500, 2300 | FDD LTE: 2100, 1800, 900, 850 TDD LTE: 2600, 2500, 2300 |
| Standard 5G |  | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | | Standard |
| Photo matrix | 13 Mpx | 50 Mpx |
| Resolution | 4160x3120 px | |
| Optical zoom | | |
| Digital zoom | | 4x |
| Number of lenses | | 5 |
| Field of view | | 77 ° |
| Focal length | | 27 mm |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 1920x1080 px | 1920x1080 px |
| Video formats | H.263, H.264, MPEG4 - 30 fps | H.263, H.264, MPEG4 - 30 fps |
| Additional | AF, f/2.2 | AF, f/1.8 |
| Second camera | | |
| Camera type | | Depth of field |
| Photo matrix | 2 Mpx | 0.3 Mpx |
| Resolution | | 640x480 px |
| Optical zoom | | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video formats | H.263, H.264, MPEG4 - 30 fps | H.263, H.264, MPEG4 - 30 fps |
| Additional | FF, f/2.4 | FF |
CAMERAS - FRONT
| First camera | | |
| Camera type | | Portrait |
| Photo matrix | 16 Mpx | 5 Mpx |
| Resolution | 4608x3456 px | |
| Optical zoom | | |
| Number of lenses | | 3 |
| Field of view | | 76 ° |
| Flash | | |
| Dual-colour LED flash | | |
| Video resolution | 1920x1080 px | 1280x720 px |
| Video formats | H.263, H.264, MPEG4 - 30 fps | H.263, H.264, MPEG4 - 30 fps |
| Additional | f/2.0 | FF, f/2.22 |
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 | - | - |
| LTE UP | - | 51.00 Mbit/s |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v4.2 LE | v5.0 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n | v802.11 b/g/n |
| WiFi frequencies | 2,4 GHz; 5 GHz | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | 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 | 3.5 mm |
| HD Voice | | |
| Sound formats | AAC, AAC+, AMR, WAV, eAAC+ | AAC, AAC+, AMR, APE, FLAC, MID, MKA, OGG, WAV, WMA, 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 | | |