LG K51S (K510EMW) vs ZTE X990D (Dual-sim)
Side by side comparison between LG K51S vs ZTE X990 phones, differences, pros, cons and full specifications. What's the better?
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6.55"
IPS
IPS
720x1600
32
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
vs
What's the better phone? LG K51S (K510EMW)
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!
26 Advantages 
3 Advantages | 4 Common items in both devices |
| Only digital zoom |
| 2 slots (Dual-SIM) |
| 3.5mm jack |
| USB 2.0 Type-C, USB OTG On-The-Go / MicroUSB 2.0 |
| + 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 | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| Model | K51S (K510EMW) | X990D (Dual-sim) |
| Other model names | LG K51s LM-K510EMW, LMK510EMW (Dual-Sim + NFC) | ZTE X990 Dual-sim |
| Country or region available |   (Europe), (Global, International) | feature not registered |
| Brand | LG | ZTE |
| Release date | 4/1/2020 | 5/1/2010 |
| Depth | 8.26 millimeters (0.33 inches) | 11.8 millimeters (0.46 inches) |
| Size (width x height) | 76.7 x 165.2 millimeters (3.02 x 6.5 in) | 60.8 x 106.8 millimeters (2.39 x 4.2 in) |
| Weight | 194 grams (6.79 ounces) | 95 grams (3.33 ounces) |
| Build, materials | Plastic body, glass front | feature not registered |
| Protection against water and others | MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | Not supported |
📲 Display | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| Display type | TFT IPS LCD | TFT LCD |
| Screen size | 6.55" inches | 2.4" inches |
| Screen-to-body ratio | ~81.7% (screen-to-body ratio) | ~27.5% (screen-to-body ratio) |
| Display resolution | 720x1600 pixels (20:9) | 320x240 pixels |
| Touchscreen | Capacitive Multitouch | Not supported |
| Pixel density (dot pitch) | 268 PPI | 167 PPI |
| Colors | 16 million | 260 thousand |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | 60Hz | feature not registered |
| Display features | 400nits[typ] | feature not registered |
🤖 Operating System | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| System version | Android 9.0 Pie | Proprietary OS |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| Chipset | 64bit: MediaTek Helio P35 (MT6765) (12nm) | feature not registered |
| CPU | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core) | Single-core, 1 processor: Single-core |
| GPU graphical controller | PowerVR GE8320 MP2 (680MHz) | feature not registered |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| RAM memory | 3GB LPDDR3 | feature not registered |
| Internal storage | 64GB (47GB available) eMMC 5.1 | 128MB (50MB available) |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 8GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 300/50 Mbps | 0.236 Mbps |
| Network technology | 2G, 3G, 4G | 2G |
| 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 | GSM 900/1800 |
| Primary 3G network | UMTS 850/900/1900/2100 | Not supported |
| Primary 4G network | LTE Cat6 (1, 3, 7, 8, 20) TD-LTE (38) | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE |
| 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, EDGE | GPRS |
📷 Camera | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| Back camera (main camera) | (quad camera) 32 megapixels 5MP ultrawide f/2.216mm1.12μm115° 2MP macro f/2.422mm1.75μm88.6° 2MP depth f/2.41.75μm | 2 megapixels |
| Main camera resolution | 6528x4896 pixels | 1600x1200 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | QCIF (176x144) |
| Flash | LED flash | Not supported |
| Focal aperture | f/1.8 (aperture) | feature not registered |
| Focal length | 24mm lens | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | 0.8µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Not supported |
| Touch focus | Supported | feature not registered |
| Image stabilization | EIS: Digital stabilization | feature not registered |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | feature not registered |
| BSI sensor | Not supported | feature not registered |
| HDR | HDR photo on both cameras | feature not registered |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| Front camera (secondary) | 13 megapixels | Not supported |
| Front camera resolution | 4128x3096 pixels | Not supported |
| Video recording (secondary) | Full HD (1920x1080) | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | feature not registered |
| 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 | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | feature not registered |
| Radio | Not supported | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, eAAC+ |
🔌 Connectivity | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 2.0 + A2DP |
| WiFi | 802.11 a/b/g/n [wifi4] (2.4GHz, 5GHz) WiFi Direct, hotspot | Not supported |
| DLNA | Supported | feature not registered |
| GPS | A-GPS, GeoTagging | Not supported |
| NFC | Supported | Not supported |
| Infrared port | Not supported | feature not registered |
🧭 Sensors | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| Sensors | Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Proximity sensor | Not supported |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 4000 mAh | 900 mAh |
| Charger, watts | 10W (5V/2A) Wired charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 10.5 hours | 8 hours |
| Standby | 370 hours (15.4 days) | 500 hours (20.8 days) |
➕ Other features | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice recorder |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS, MMS, E-mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | WAP, HTML |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Fixed QWERTY keyboard |
| Miscellaneous | • Colors: Titanium, Blue, Pink/Red • Silicone case included • Google Assistant (dedicated side button) • DTS:X 3D audio | • Colors: Black, White • Java framework |
☢️ Radiation rate | ||
| LG K51S (K510EMW) | ZTE X990D (Dual-sim) | |
| 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 |