Microsoft Lumia 640 (Dual-Sim LTE) vs Xiaomi Redmi 9A (32GB/2GB)
Side by side comparison between Microsoft Lumia 640 vs Xiaomi Redmi 9A phones, differences, pros, cons and full specifications. What's the better?
,
vs
6.53"
IPS
IPS
720x1600
13
MP
MP
5mp
2GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Redmi 9A (32GB/2GB)
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!
9 Advantages 
15 Advantages | 24 Common items in both devices |
| TFT IPS LCD |
| 16 million |
| LED flash |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| f/2.2 (aperture) |
| Full HD (1920x1080) |
| +17 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 LTE) | Redmi 9A (32GB/2GB) | |
| Model | Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) |
| Other model names | Microsoft Lumia 640 LTE Dual Chip RM-1077, Lumia 640 RM-1077 | Xiaomi Redmi 9A M2006C3LG, M2006C3LI |
| Country or region available | feature not registered |  (Global, International) |
| Brand | Microsoft | Xiaomi |
| Release date | 4/1/2015 | 7/7/2020, Announced: 6/30/2020 |
| Depth | 8.8 millimeters (0.35 inches) | 9 millimeters (0.35 inches) |
| Size (width x height) | 72.2 x 141.3 millimeters (2.84 x 5.56 in) | 77.07 x 164.9 millimeters (3.03 x 6.49 in) |
| Weight | 145 grams (5.08 ounces) | 194 grams (6.79 ounces) |
| Build, materials | feature not registered | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 5" inches | 6.53" inches |
| Screen-to-body ratio | ~67.6% (screen-to-body ratio) | ~81% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels | 720x1600 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 294 PPI | 269 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Not supported |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | 400nits[typ] |
🤖 Operating System | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| System version | Windows Phone 8.1 | Android 10 |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| Chipset | 32bit: Qualcomm Snapdragon 400 MSM8926 (28nm) | 64bit: MediaTek Helio G25 (MT6762G) (12nm) |
| CPU | Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A7 (Quad-core) | Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 305 400Mhz | PowerVR GE8320 MP2 (650MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 84175 (v8) |
💽 Memory and storage | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| RAM memory | 1GB LPDDR2 | 2GB LPDDR4X |
| Internal storage | 8GB (3GB available) | 32GB (20GB available) eMMC 5.1 |
| External storage | Until 128GB microSD, microSDXC (dedicated slot) | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| 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) micro-SIM (3FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 150/50 Mbps | 300/50 Mbps |
| Network technology | 2G, 3G, 4G | 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 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat4 700/850/900/1700/1800/1900/2100/2300/2600 (Bands 1/2/3/4/5/7/8/12/17/20/28/32/38/40) | LTE Cat6 (1, 2 ,3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | 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 LTE) | Redmi 9A (32GB/2GB) | |
| Back camera (main camera) | 8 megapixels | 13 megapixels |
| Main camera resolution | 3264x2448 pixels | 4128x3096 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/2.2 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | 28mm (lens) |
| Sensor size | 1/4" inches | feature not registered |
| Pixel size | feature not registered | 1µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | feature not registered | EIS: Digital 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 LTE) | Redmi 9A (32GB/2GB) | |
| Front camera (secondary) | 1 megapixels | 5 megapixels |
| Front camera resolution | 1280x720 pixels | 2560x1920 pixels |
| Video recording (secondary) | HD (1280x720) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| 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 | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| 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, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+ | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Micro-B USB SlimPort |
| Bluetooth | 4.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Ambient light sensor Face unlock 2D Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 2500 mAh | 5000 mAh |
| Charger, watts | Wired charging | 10W (5V/2A) Wired charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 20 hours | feature not registered |
| Standby | 840 hours (35 days) | feature not registered |
➕ Other features | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder, Voice commands |
| 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: Carbon Gray, Sky Blue, Ocean Green • MIUI 12 |
☢️ Radiation rate | ||
| Microsoft Lumia 640 (Dual-Sim LTE) | Redmi 9A (32GB/2GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.9W/kg (head), 0.65W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.4W/kg (head), 1.19W/kg (body) |