Oppo A57 vs Samsung Galaxy Alpha
| Type | Touch | Touch |
| Dimensions | 149.10 x 72.90 x 7.65 mm | 132.40 x 65.50 x 6.70 mm |
| Weight | 147.00 g | 114.00 g |
| Display size | 5.20" | 4.70" |
| Display | Color / IPS TFT 16M colors 720 x 1280 px (5.20") 282 ppi | Color / Super AMOLED 16M colors 720 x 1280 px (4.70") 313 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 1420 min. (23.7 h) | 3G: 660 min. (11.0 h) |
| Stand-by (max.) | 3G: 230 h. (9.6 days) |  |
| Playback time (max.) | nd | Audio: 37 h (1.5 days) Video: 10 h (0.4 days) |
| Internet browsing time (max.) | nd | WiFi: 11 h (0.5 days) 3G: 9 h (0.4 days) 4G: 9 h (0.4 days) |
| Standard battery | Li-Ion 2900 mAhBuy powerbank
| Li-Ion 1860 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 32 GB | 32 GB |
| RAM memory | 3 GB | 2 GB |
| Memory cards |  microSD, microSDHC, microSDXC up to 128 GBBuy memory card | |
| Operating system | Android 6.0 Marshmallow | Android 4.4.4 KitKat |
| Interface | ColorOS 3.0 | - |
| Processor | Qualcomm Snapdragon 435 8940 | Samsung Exynos 5430 |
| Processor clock | 1400 MHz | 1800 MHz |
| GPU | Adreno 505 | ARM Mali-T628 MP6 @600 MHz |
| Touchscreen | | |
| SAR (10g) | | 0,506 W/kg |
| DualSIM | | |
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | SingleSIM(nanoSIM) |
| DualSIM mode | dual standby | nd |
| Hybrid DualSIM | | nd |
| Announced | 4Q 2016 | 3Q 2014 |
| Other names | - | SM-G850F; SM-G850L; SM-G850K; SM-G850S |
| GSM frequencies | 850 900 1800 1900 | 900 1800 1900 |
| UMTS | 850 900 1900 2100 | 850 900 1900 2100 |
| LTE standard | FDD LTE: 2100, 1800, 900, 850 TDD LTE: 2600, 2500, 2300, 1900 | |
| CDMA | | |
| Standard TD-SCDMA | 1900 2000 | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 13 Mpx | 12 Mpx |
| Resolution | 4160x3120 px | 4608x2592 px |
| Optical zoom | | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 1280x720 px | 3840x2160 px |
| Video formats | H.263, H.264, MPEG4 - 30 fps | H.263, H.264, MPEG4 - 30 fps |
| Additional | AF, f/2.2 | - |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | 16 Mpx | 2.1 Mpx |
| Resolution | 4608x3456 px | 1600x1200 px |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video resolution | 1920x1080 px | |
| Video formats | H.263, H.264, MPEG4 - 30 fps | H.263, H.264, MPEG4 - 30 fps |
| Additional | FF, f/2.0 | - |
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 | |
| HSUPA | 5.76 Mbit/s | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | - | - |
| LTE UP | 51.00 Mbit/s | 51.00 Mbit/s |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v4.1 | v4.0 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 b/g/n | v802.11 a/b/g/n/ac |
| WiFi frequencies | 2,4 GHz | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | T9 | XT9 |
| 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, APE, FLAC, OGG, WAV, WMA | 3GA, AAC, AMR, AWB, FLAC, IMY, M4A, MID, MIDI, MXMF, OGA, OGG, OTA, RTTTL, RTX, WAV, WMA, XMF |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | ART | Dalvik |
| 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 | | |