ZTE V821 vs Vivo X7 (128GB)
Side by side comparison between ZTE V821 vs Vivo X7 phones, differences, pros, cons and full specifications. What's the better?
,
vs
5.2"
AMOLED
AMOLED
1080x1920
13
MP
MP
16mp
4GB
RAM
RAM
Octa-core
3000
mAh
mAh
(Non removable)
What's the better phone? Vivo X7 (128GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
4 Advantages 
24 Advantages | 6 Common items in both devices |
| Only digital zoom |
| Hands-free calling |
| Vibrating alert |
| 3.5mm jack |
| A-GPS, GeoTagging |
| MicroUSB 2.0 / MicroUSB 2.0, USB OTG On-The-Go |
| + specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| ZTE V821 | Vivo X7 (128GB) | |
| Change model | ||
| Model | ZTE V821 | Vivo X7 (128GB) |
| Other model names | ZTE V821, ZTE GV821, ZTE GSM V821 Dual Chip, Dual SIM | BBK vivo X7 Dual-Sim |
| Country or region available | feature not registered |     (Global, International), China, Hong Kong, Taiwan |
| Brand | ZTE | Vivo |
| Release date | 6/1/2011 | 7/1/2016 |
| Depth | 12.4 millimeters (0.49 inches) | 7.2 millimeters (0.28 inches) |
| Size (width x height) | 61 x 110 millimeters (2.4 x 4.33 in) | 71.3 x 147.3 millimeters (2.81 x 5.8 in) |
| Weight | 120 grams (4.2 ounces) | 151 grams (5.29 ounces) |
| Build, materials | feature not registered | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| ZTE V821 | Vivo X7 (128GB) | |
| Display type | CSTN - passive matrix | Super AMOLED |
| Screen size | 2.4" inches | 5.2" inches |
| Screen-to-body ratio | ~26.6% (screen-to-body ratio) | ~71% (screen-to-body ratio) |
| Display resolution | 320x240 pixels | 1080x1920 pixels |
| Touchscreen | Resistive Single touch 1-point | Capacitive Multitouch |
| Pixel density (dot pitch) | 167 PPI | 424 PPI |
| Colors | 65 thousand | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| ZTE V821 | Vivo X7 (128GB) | |
| System version | Android 2.2.1 Froyo | Android 5.1.1 Lollipop |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| ZTE V821 | Vivo X7 (128GB) | |
| Chipset | MediaTek MT6516 | 64bit: Qualcomm Snapdragon 652 MSM8976 (28nm) |
| CPU | Single-core, 1 processor: Single-core ARM926EJ-S rev 5 (Single-core) | Octa-core, 2 processors: 4x 1.8GHz ARM Cortex-A72 (Quad-core) 4x 1.4GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | feature not registered | Qualcomm Adreno 510 600Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| ZTE V821 | Vivo X7 (128GB) | |
| RAM memory | feature not registered | 4GB LPDDR3 |
| Internal storage | 256MB (100MB available) | 128GB (116GB available) |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| ZTE V821 | Vivo X7 (128GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 2 slots (Dual-SIM) Standard mini-SIM (2FF) | 2 slots (Dual-SIM) micro-SIM (3FF) and nano-SIM (4FF) |
| Maximum Download / Upload | 0.236 Mbps | 150/50 Mbps |
| Network technology | 2G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Dual-Band 900/1800 |
| Primary 2G network | GSM 850/900/1800/1900 | CDMA 800, GSM 900/1800 |
| Primary 3G network | Not supported | TD-SCDMA 1900/2000 UMTS 850/900/1900/2100 |
| Primary 4G network | Not supported | LTE Cat4 (Bands 1,3) TD-LTE (Bands 38,39,40,41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 900/1800 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS | GPRS, EDGE |
📷 Camera | ||
| ZTE V821 | Vivo X7 (128GB) | |
| Back camera (main camera) | 2 megapixels | 13 megapixels |
| Main camera resolution | 1600x1200 pixels | 4128x3096 pixels |
| Video recording (primary) | QCIF (176x144) | Full HD (1920x1080) 30 fps |
| Flash | Not supported | LED flash on both cameras |
| Focal aperture | feature not registered | f/2.2 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Autofocus | Not supported | PDAF: phase detection autofocus |
| Touch focus | feature not registered | Supported |
| Image stabilization | feature not registered | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | feature not registered | Face detection, Smile detection |
| BSI sensor | feature not registered | Not supported |
| HDR | feature not registered | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| ZTE V821 | Vivo X7 (128GB) | |
| Front camera (secondary) | Not supported | 16 megapixels |
| Front camera resolution | Not supported | 4608x3456 pixels |
| Video recording (secondary) | Not supported | Full HD (1920x1080) |
| Front flash | Not supported | LED |
| Focal aperture | feature not registered | f/2.0 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
🔉 Sound and multimedia | ||
| ZTE V821 | Vivo X7 (128GB) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | feature not registered | 2 microphones or more |
| Radio | FM | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, eAAC+ | MP3, WAV, eAAC+, FLAC |
🔌 Connectivity | ||
| ZTE V821 | Vivo X7 (128GB) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 2.1 + A2DP | 4.0 + A2DP |
| WiFi | 802.11 b/g [wifi3] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | feature not registered | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging |
| NFC | Not supported | Not supported |
| Infrared port | feature not registered | Not supported |
🧭 Sensors | ||
| ZTE V821 | Vivo X7 (128GB) | |
| Sensors | Not supported | Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| ZTE V821 | Vivo X7 (128GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) Li3709T42P3h483757 | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 900 mAh | 3000 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | 7.5 hours | feature not registered |
| Standby | 316.7 hours (13.2 days) | feature not registered |
➕ Other features | ||
| ZTE V821 | Vivo X7 (128GB) | |
| Call control | Voice recorder | Voice dialing, Voice recorder |
| Messaging | SMS, MMS, E-mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Not supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Fixed QWERTY keyboard | Not supported |
| Miscellaneous | • Colors: Black on red • WiFi hotspot Java framework | • Colors: Gold, Rose, Black • USB OTG On-The-Go • FunTouch OS 2.5.1 • Fast battery charging |
☢️ Radiation rate | ||
| ZTE V821 | Vivo X7 (128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |