Vivo Y51 vs Apple iPhone 6
| Type | Touch | Touch |
| Dimensions | 143.80 x 71.70 x 7.52 mm | 138.10 x 67.00 x 6.90 mm |
| Weight | 157.00 g | 129.00 g |
| Display size | 5.00" | 4.70" |
| Display | Color / IPS TFT 16M colors 540 x 960 px (5.00") 220 ppi | Color / IPS TFT 16M colors 750 x 1334 px (4.70") 326 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) |  | 3G: 840 min. (14.0 h) |
| Stand-by (max.) | | 3G: 240 h. (10.0 days) |
| Playback time (max.) | nd | Audio: 50 h (2.1 days) Video: 11 h (0.5 days) |
| Internet browsing time (max.) | nd | WiFi: 11 h (0.5 days) 3G: 10 h (0.4 days) 4G: 10 h (0.4 days) |
| Standard battery | Li-Ion 2350 mAhBuy powerbank
| Li-Ion 1810 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 16 GB | 16 GB |
| RAM memory | 2 GB | 1 GB |
| Memory cards |  microSD, microSDHC, microSDXC up to 128 GBBuy memory card | |
| Operating system | Android 5.0.2 Lollipop | iOS 8 |
| Processor clock | 1200 MHz | 1400 MHz |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | | SingleSIM(nanoSIM) |
| Hybrid DualSIM | | nd |
| Announced | 4Q 2015 | 3Q 2014 |
| Other names | - | A1549; A1586 |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | | 850 900 1900 2100 |
| LTE standard | TDD LTE: 2600, 2300, 1900 | |
| CDMA | | |
| Standard TD-SCDMA | 1900 2000 | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 8 Mpx | 8 Mpx |
| Resolution | 3264x2448 px | 3264x2448 px |
| Optical zoom | | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 1920x1080 px | 1920x1080 px |
| Video formats | MPEG4, H.263, H.264 | H.264, H265 - 60 fps |
| Additional | AF | f/2.2 |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | 5 Mpx | 1.2 Mpx |
| Resolution | 2592x1944 px | 1280x960 px |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video formats | MPEG4, H.263, H.264 | nd |
| Additional | - | f/2.2 |
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 | | 42.00 Mbit/s |
| HSUPA | | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | | 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 | XT9 | T9 |
| Swype | | |
| e-mail client | 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, MIDI, OGG, WAV, WMA | AAC, AAX, AAX+, AIFF, HE-AAC, WAV |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | 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 | | |