Xiaomi Redmi 9T vs Microsoft Lumia 640 Dual SIM
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| PHONES | ||
|---|---|---|
| Phone Names | Xiaomi Redmi 9T | Microsoft Lumia 640 Dual SIM |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41 | - |
| Speed | HSPA, LTE | HSPA 42.2/5.76 Mbps |
| Technology | GSM / HSPA / LTE | GSM / HSPA |
| Launch | ||
|---|---|---|
| Announced | 2021, January 08 | 2015, March. Released 2015, April |
| Status | Available. Released 2021, January 18 | Discontinued |
| Body | ||
|---|---|---|
| Build | Glass front (Gorilla Glass 3), plastic frame, plastic back | - |
| Dimensions | 162.3 x 77.3 x 9.6 mm (6.39 x 3.04 x 0.38 in) | 141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
| SIM | Nano-SIM + Nano-SIM | Dual SIM (Micro-SIM, dual stand-by) |
| Weight | 198 g (6.98 oz) | 145 g (5.11 oz) |
| Water-repellent coating | - | |
| Display | ||
|---|---|---|
| Protection | Corning Gorilla Glass 3 | Corning Gorilla Glass 3 |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density) | 720 x 1280 pixels, 16:9 ratio (~294 ppi density) |
| Size | 6.53 inches, 104.7 cm2 (~83.4% screen-to-body ratio) | 5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio) |
| Type | IPS LCD, 400 nits (typ) | IPS LCD |
| - | ClearBlack display | |
| Platform | ||
|---|---|---|
| CPU | Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) | Quad-core 1.2 GHz Cortex-A7 |
| Chipset | Qualcomm SM6115 Snapdragon 662 (11 nm) | Qualcomm MSM8926 Snapdragon 400 (28 nm) |
| GPU | Adreno 610 | Adreno 305 |
| OS | Android 10, MIUI 12 | Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10 |
| Memory | ||
|---|---|---|
| Card slot | microSDXC (dedicated slot) | microSDXC (dedicated slot) |
| Internal | 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM | 8GB 1GB RAM |
| UFS 2.1 - 64GB UFS 2.2 - 128GB | eMMC 4.5 | |
| Main Camera | ||
|---|---|---|
| Features | LED flash, HDR, panorama | LED flash |
| Quad | 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 120˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro) Auxiliary lens | - |
| Single | - | 8 MP, f/2.2, 28mm (wide), 1/4.0", AF |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera | ||
|---|---|---|
| Single | 8 MP, f/2.1, 27mm (wide), 1/4.0", 1.12µm | 1 MP |
| Video | 1080p@30fps | 720p |
| Sound | ||
|---|---|---|
| 3.5mm jack | Yes | Yes |
| 35mm jack | Yes | Yes |
| Loudspeaker | Yes, with stereo speakers | Yes |
| 24-bit/192kHz audio | - | |
| Comms | ||
|---|---|---|
| Bluetooth | 5.0, A2DP, LE | 4.0, A2DP |
| Infrared port | Yes | - |
| NFC | Yes (market/region dependent) | No |
| Positioning | GPS, GLONASS, GALILEO, BDS | GPS, GLONASS, BDS |
| Radio | FM radio | FM radio |
| USB | USB Type-C 2.0, OTG | microUSB 2.0 |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| Features | ||
|---|---|---|
| Sensors | Fingerprint (side-mounted), accelerometer, proximity, compass | Accelerometer, proximity, compass |
| Battery | ||
|---|---|---|
| Charging | 18W wired 2.5W reverse wired | - |
| Stand-by | - | Up to 840 h (2G) / Up to 840 h (3G) |
| Talk time | - | Up to 27 h 30 min (2G) / Up to 20 h 30 min (3G) |
| Type | Li-Po 6000 mAh | Li-Ion 2500 mAh, removable |
| Misc | ||
|---|---|---|
| Colors | Carbon Gray, Twilight Blue, Sunrise Orange, Ocean Green | Glossy cyan, Orange, White, Matte black |
| Models | J19S, M2010J19SG, M2010J19SY | - |
| Price | € 87.56 | About 170 EUR |
| SAR | 1.09 W/kg (head) 1.00 W/kg (body) | - |
| SAR EU | 0.60 W/kg (head) 0.81 W/kg (body) | - |
| Pricing | ||
|---|---|---|
| 128GB 6GB RAM | Rp 2,272,000 | - |
| 64GB 4GB RAM | $ 168.78 | - |
| Tests | ||
|---|---|---|
| Audio quality | - | Noise -93.1dB / Crosstalk -93.2dB |
| Battery life | Endurance rating 150h | Endurance rating 76h |
| Camera | Photo / Video | - |
| Display | Contrast ratio: 1594:1 | Contrast ratio: 1034 (nominal), 2.563 (sunlight) |
| Loudspeaker | -25.6 LUFS (Very good) | Voice 70dB / Noise 65dB / Ring 75dB |
| Performance | AnTuTu: 177917 (v8) GeekBench: 1400 (v5.1) GFXBench: 5.8fps (ES 3.1 onscreen) | - |
| OUR TESTS | ||
|---|---|---|
| Audio quality | - | Noise -93.1dB / Crosstalk -93.2dB |
| Battery (old) | Endurance rating 150h | Endurance rating 76h |
| Camera | Photo / Video | - |
| Display | 1594:1 contrast ratio, 437 nits max brightness (measured) | Contrast ratio: 1034 (nominal), 2.563 (sunlight) |
| Loudspeaker | -25.6 LUFS (Very good) | Voice 70dB / Noise 65dB / Ring 75dB |
| Performance | AnTuTu: 177917 (v8) GeekBench: 1400 (v5.1) GFXBench: 5.8fps (ES 3.1 onscreen) | - |