Asus M307 vs Oppo A57
| Type | Clamshell | Touch |
| Dimensions | 88.00 x 43.00 x 22.90 mm | 149.10 x 72.90 x 7.65 mm |
| Weight | 92.00 g | 147.00 g |
| Display size | 1.80" | 5.20" |
| Display | Color / TFT 256k colors 176 x 220 px (1.80") | Color / IPS TFT 16M colors 720 x 1280 px (5.20") 282 ppi |
| Display protection |   | |
| Additional display | Color / CSTN 256k colors 128 x 128 px (1.10") | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 300 min. (5.0 h) | 2G: 1420 min. (23.7 h) |
| Stand-by (max.) | 2G: 150 h. (6.3 days) | 3G: 230 h. (9.6 days) |
| Standard battery | Li-Ion 700 mAhBuy powerbank
| Li-Ion 2900 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Phonebook memory | 300 places |  |
| Internal memory | 4 MB | 32 GB |
| RAM memory | | 3 GB |
| Memory cards |  miniSD | microSD, microSDHC, microSDXC up to 128 GBBuy memory card |
| Operating system | - | Android 6.0 Marshmallow |
| Interface | - | ColorOS 3.0 |
| Processor | - | Qualcomm Snapdragon 435 8940 |
| Processor clock | - | 1400 MHz |
| GPU | - | Adreno 505 |
| Touchscreen | | |
| SAR (10g) | 0,59 W/kg | |
| DualSIM | | |
| SIM cards standard | | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | nd | dual standby |
| Hybrid DualSIM | nd | |
| Announced | | 4Q 2016 |
| Other names | - | - |
| GSM frequencies | 900 1800 1900 | 850 900 1800 1900 |
| UMTS | | 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 | 2 Mpx | 13 Mpx |
| Resolution | | 4160x3120 px |
| Optical zoom | | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 320x240 px | 1280x720 px |
| Video formats | MPEG4, AAC | H.263, H.264, MPEG4 - 30 fps |
| Additional | - | AF, f/2.2 |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | nd | 16 Mpx |
| Resolution | nd | 4608x3456 px |
| Optical zoom | nd | |
| Flash | nd | |
| Dual-colour LED flash | nd | |
| Video resolution | nd | 1920x1080 px |
| Video formats | nd | H.263, H.264, MPEG4 - 30 fps |
| Additional | nd | 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 |
| WIMAX+ | | |
| GPRS | class 10 | |
| EDGE | | |
| Bluetooth | | v4.1 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | | v802.11 b/g/n |
| WiFi frequencies | | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | | 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 |
| Swype | | |
| e-mail client | | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | | 3.5 mm |
| HD Voice | | |
| Sound formats | AAC, AMR, MIDI, SMAF | AAC, AAC+, AMR, APE, FLAC, OGG, WAV, WMA |
| Polyphony | 64 voices | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | MIDP 1.0 | 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 | | |