Microsoft Lumia 640 Dual SIM vs. Google Pixel 7a: A Generational Leap?
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🏆 Quick Verdict
The Google Pixel 7a is the clear winner. While the Lumia 640 boasts impressive battery life, the Pixel 7a's superior performance, camera, display, and modern features make it a vastly more compelling choice for most users. It's a significant upgrade in almost every aspect.
| PHONES | ||
|---|---|---|
| Phone Names | Microsoft Lumia 640 Dual SIM | Google Pixel 7a |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | - | 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 71 - GWKK3, G0DZQ |
| 5G bands | - | 1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 28, 30, 38, 41, 48, 66, 71, 77, 78 SA/NSA/Sub6 - GWKK3 |
| Speed | HSPA 42.2/5.76 Mbps | HSPA, LTE, 5G |
| Technology | GSM / HSPA | GSM / HSPA / LTE / 5G |
| - | 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 76, 77, 78, 79 SA/NSA/Sub6 - GHL1X, G82U8 | |
| Launch | ||
|---|---|---|
| Announced | 2015, March. Released 2015, April | 2023, May 10 |
| Status | Discontinued | Available. Released 2023, May 10 |
| Body | ||
|---|---|---|
| Build | - | Glass front (Gorilla Glass 3), aluminum frame, plastic back |
| Dimensions | 141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) | 152 x 72.9 x 9 mm (5.98 x 2.87 x 0.35 in) |
| SIM | Dual SIM (Micro-SIM, dual stand-by) | Nano-SIM + eSIM |
| Weight | 145 g (5.11 oz) | 193.5 g (6.84 oz) |
| - | IP67 dust/water resistant (up to 1m for 30 min) | |
| Display | ||
|---|---|---|
| Protection | Corning Gorilla Glass 3 | Corning Gorilla Glass 3 |
| Resolution | 720 x 1280 pixels, 16:9 ratio (~294 ppi density) | 1080 x 2400 pixels, 20:9 ratio (~429 ppi density) |
| Size | 5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio) | 6.1 inches, 90.7 cm2 (~81.8% screen-to-body ratio) |
| Type | IPS LCD | OLED, HDR, 90Hz |
| ClearBlack display | Always-on display | |
| Platform | ||
|---|---|---|
| CPU | Quad-core 1.2 GHz Cortex-A7 | Octa-core (2x2.85 GHz Cortex-X1 & 2x2.35 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) |
| Chipset | Qualcomm MSM8926 Snapdragon 400 (28 nm) | Google Tensor G2 (5 nm) |
| GPU | Adreno 305 | Mali-G710 MP7 |
| OS | Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10 | Android 13, upgradable to Android 15, up to 5 major Android upgrades |
| Memory | ||
|---|---|---|
| Card slot | microSDXC (dedicated slot) | No |
| Internal | 8GB 1GB RAM | 128GB 8GB RAM |
| eMMC 4.5 | UFS 3.1 | |
| Main Camera | ||
|---|---|---|
| Dual | - | 64 MP, f/1.9, 26mm (wide), 1/1.73", 0.8µm, dual pixel PDAF, OIS 13 MP, f/2.2, 120˚ (ultrawide), 1.12µm |
| Features | LED flash | Dual-LED flash, Pixel Shift, Auto-HDR, panorama |
| Single | 8 MP, f/2.2, 28mm (wide), 1/4.0", AF | - |
| Video | 1080p@30fps | 4K@30/60fps, 1080p@30/60/120/240fps, OIS |
| Selfie camera | ||
|---|---|---|
| Features | - | HDR, panorama |
| Single | 1 MP | 13 MP, f/2.2, 20mm (ultrawide), 1.12µm |
| Video | 720p | 4K@30fps, 1080p@30fps |
| Sound | ||
|---|---|---|
| 3.5mm jack | Yes | No |
| 35mm jack | Yes | No |
| Loudspeaker | Yes | Yes, with stereo speakers |
| Comms | ||
|---|---|---|
| Bluetooth | 4.0, A2DP | 5.3, A2DP, LE |
| NFC | No | Yes |
| Positioning | GPS, GLONASS, BDS | GPS, GLONASS, GALILEO, BDS, QZSS, NavIC |
| Radio | FM radio | No |
| USB | microUSB 2.0 | USB Type-C 3.2 |
| WLAN | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 a/b/g/n/ac/6e, tri-band |
| Features | ||
|---|---|---|
| Sensors | Accelerometer, proximity, compass | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass, barometer |
| Battery | ||
|---|---|---|
| Charging | - | 18W wired, PD3.0 7.5W wireless |
| 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-Ion 2500 mAh, removable | Li-Po 4385 mAh |
| Misc | ||
|---|---|---|
| Colors | Glossy cyan, Orange, White, Matte black | Charcoal, Snow, Sea, Coral |
| Models | - | GWKK3, GHL1X, G0DZQ, G82U8 |
| Price | About 170 EUR | € 179.90 / $ 150.00 / £ 170.00 / ₹ 25,980 |
| Tests | ||
|---|---|---|
| Audio quality | Noise -93.1dB / Crosstalk -93.2dB | - |
| Battery life | Endurance rating 76h | - |
| Display | Contrast ratio: 1034 (nominal), 2.563 (sunlight) | - |
| Loudspeaker | Voice 70dB / Noise 65dB / Ring 75dB | - |
Microsoft Lumia 640 Dual SIM
- Extremely long battery life
- Affordable price (when available)
- Dual SIM support
- Outdated software and limited support
- Slow performance
- Low-resolution display
- Basic camera
Google Pixel 7a
- Excellent camera
- Smooth performance
- Bright and vibrant display
- Modern Android features
- Fast charging
- Can get warm under heavy load
- No expandable storage
Display Comparison
The Pixel 7a's display is a revelation compared to the Lumia 640. The 7a boasts a significantly brighter display (1070 nits) offering vibrant colors and excellent outdoor visibility. The Lumia 640's contrast ratio is decent (1034 nominal), but lacks the brightness and overall visual appeal of the Pixel 7a. The Pixel 7a also has a higher resolution, resulting in sharper images and text.
Camera Comparison
The Pixel 7a's camera is a major selling point. Google's computational photography is renowned, delivering excellent image quality, even in challenging lighting conditions. The Lumia 640's camera is adequate for basic snapshots, but lacks the detail, dynamic range, and features of the Pixel 7a. Video recording capabilities are also far superior on the Pixel 7a.
Performance
The Pixel 7a's Google Tensor G2 chipset and octa-core CPU utterly dominate the Lumia 640's Snapdragon 400. The Pixel 7a offers significantly faster app loading, smoother multitasking, and a more responsive user experience. The Lumia 640, while functional, can feel sluggish by modern standards.
Battery Life
Interestingly, both phones share the same endurance rating of 76h. However, the Pixel 7a's more efficient chipset and modern power management likely contribute to better real-world battery life despite the Lumia 640's larger battery capacity. The Pixel 7a also supports faster charging (18W wired, 7.5W wireless) compared to the Lumia 640.
Buying Guide
Who should buy the Microsoft Lumia 640 Dual SIM? Primarily those seeking a very basic, ultra-budget phone and are comfortable with the Windows Phone ecosystem (though support is extremely limited now). Who should buy the Google Pixel 7a? Anyone looking for a reliable, feature-rich Android phone with a fantastic camera and smooth performance, without breaking the bank.