Microsoft Lumia 640 (Dual-Sim 3G) vs Asus Zenfone 5Z (ZS621KL 256GB)
Side by side comparison between Microsoft Lumia 640 vs Asus Zenfone 5Z phones, differences, pros, cons and full specifications. What's the better?
,
vs
6.2"
IPS
IPS
1080x2246
12
MP
MP
8mp
8GB
RAM
RAM
Octa-core
3300
mAh
mAh
(Non removable)
What's the better phone? Asus Zenfone 5Z (ZS621KL 256GB)
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!
5 Advantages 
27 Advantages | 20 Common items in both devices |
| TFT IPS LCD |
| 16 million |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| Capacitive |
| Multitouch |
| Accelerometer |
| +13 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 | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Model | Lumia 640 (Dual-Sim 3G) | Zenfone 5Z (ZS621KL 256GB) |
| Other model names | Microsoft Lumia 640 3G Dual Sim, Microsoft RM-1109 | Asus Zenfone 5z 8GB RAM (ZS621KL), ASUS_Z01RD |
| Country or region available | feature not registered |  India |
| Brand | Microsoft | Asus |
| Release date | 4/1/2015 | 6/1/2018 |
| Depth | 8.8 millimeters (0.35 inches) | 7.9 millimeters (0.31 inches) |
| Size (width x height) | 72.2 x 141.3 millimeters (2.84 x 5.56 in) | 75.65 x 153 millimeters (2.98 x 6.02 in) |
| Weight | 145 grams (5.08 ounces) | 165 grams (5.78 ounces) |
| Build, materials | feature not registered | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 5" inches | 6.2" inches |
| Screen-to-body ratio | ~67.6% (screen-to-body ratio) | ~83.7% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels | 1080x2246 pixels (18.7:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 294 PPI | 402 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | 550nits[typ] |
🤖 Operating System | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| System version | Windows Phone 8.1 | Android 8.0 Oreo |
| Firmware update | feature not registered | Android 10 |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Chipset | 32bit: Qualcomm Snapdragon 400 MSM8926 (28nm) | 64bit: Qualcomm Snapdragon 845 MSM8998 (10nm) |
| CPU | Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A7 (Quad-core) | Octa-core, 2 processors: 4x 2.7GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 305 400Mhz | Qualcomm Adreno 630 710Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| RAM memory | 1GB LPDDR2 | 8GB LPDDR4X |
| Internal storage | 8GB (3GB available) | 256GB (240GB available) UFS 2.1 |
| External storage | Until 128GB microSD, microSDXC (dedicated slot) | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| 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) micro-SIM (3FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 42/5.76 Mbps | 800/100 Mbps |
| Network technology | 2G, 3G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1900/2100 | UMTS 800/850/900 |
| Primary 4G network | Not supported | LTE Cat15 (Bands 1,2,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,39,40,41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | GPRS, EDGE |
📷 Camera | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Back camera (main camera) | 8 megapixels | (dual camera) 12 megapixels 8MP ultrawide f/2.012mm1/4"1.12µmFF |
| Main camera resolution | 3264x2448 pixels | 4000x3000 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | f/2.2 (aperture) | f/1.8 (aperture) |
| Focal length | feature not registered | 24mm (lens) |
| Sensor size | 1/4" inches | 1/2.55" inches |
| Pixel size | feature not registered | 1.4µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | feature not registered | OIS (4-axis): Optical stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection | Face detection, Smile detection |
| BSI sensor | Supported | Not supported |
| HDR | HDR photo only main camera | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Front camera (secondary) | 1 megapixels | 8 megapixels |
| Front camera resolution | 1280x720 pixels | 3264x2448 pixels |
| Video recording (secondary) | HD (1280x720) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.0 (aperture) |
| Focal length | feature not registered | 24mm (lens) |
| Sensor size | feature not registered | 1/4" inches |
| Pixel size | feature not registered | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263, WMV | MP4, H.265, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+ | MP3, OGG, eAAC+, FLAC |
🔌 Connectivity | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| USB | MicroUSB 2.0 | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 4.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 2500 mAh | 3300 mAh |
| Charger, watts | Wired charging | 18W (9V/2A) Wired fast charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 20 hours | 25 hours (1 days) |
| Standby | 840 hours (35 days) | feature not registered |
➕ Other features | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black • Lumia Denim UI • Microsoft ClearBlack display • OneDrive 30GB • Beidou GPS • WiFi hotspot | • Colors: Midnight Blue, Meteor Silver • 2.5D curved glass screen • 95% DCI-P3 coverage • Supports glove touch • ASUS ZenUI 5.0 • 24-bit/192kHz audio • DTS sound (only headphones) |
☢️ Radiation rate | ||
| Microsoft Lumia 640 (Dual-Sim 3G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 1.04W/kg (head), 0.37W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 1.2W/kg (head), 1.477W/kg (body) |