Comparison of Microsoft Lumia 640 Dual SIM and Acer Liquid Z5 [S]ave
| Attribute |  Acer Liquid Z5 × |  Microsoft Lumia 640 Dual SIM × |
|---|---|---|
| General | ||
| Brand | Acer | Microsoft |
| Launch | ||
| Announced | 2014-01-01 | 2015-03-01 |
| Body | ||
| Width (mm) | 8.8 | 8.8 |
| Length (mm) | 145.5 | 141.3 |
| Height (mm) | 73.5 | 72.2 |
| Weight (g) | 150 | 145 |
| SIM | Dual SIM | Dual SIM (Micro-SIM, dual stand-by) |
| Network | ||
| Technology |
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| 2G bands |
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| 3G bands |
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| Speed |
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| Platform | ||
| OS | Android 4.2 (Jelly Bean) | Microsoft Windows Phone 8.1 |
| Chipset | Mediatek MT6572 (28 nm) | Qualcomm MSM8926 Snapdragon 400 (28 nm) |
| CPU | Dual-core 1.3 GHz Cortex-A7 | Quad-core 1.2 GHz Cortex-A7 |
| GPU | Mali-400 | Adreno 305 |
| Memory | ||
| Card slot | microSDHC (dedicated slot) | microSDXC (dedicated slot) |
| Internal |
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| Display | ||
| Size (in) | 5 | 5 |
| Resolution (px) | 480 x 854 | 720 x 1280 |
| Protection | - | Corning Gorilla Glass 3 |
| Display Type | TFT | IPS LCD |
| Battery | ||
| Type | Li-Ion | Li-Ion |
| Capcity (mAh) | 2000 | 2500 |
| Main Camera | ||
| Main Camera Type | Single | Single |
| Main Camera Properties |
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| Main Camera Video | Yes | 1080p@30fps |
| Main Camera Features | LED flash | LED flash |
| Selfie Camera | ||
| Selfie Camera Type | Single | Single |
| Selfie Camera Properties |
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| Selfie Camera Video | - | 720p |
| Comms | ||
| WLAN | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| Bluetooth | 3.0, A2DP, EDR | 4.0, A2DP |
| GPS | + | + |
| NFC | - | - |
| Radio | FM radio | FM radio |
| USB | microUSB 2.0 | microUSB 2.0 |
| Sound | ||
| Loudspeaker | + | + |
| 3.5mm jack | + | + |
| Features | ||
| Sensors |
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| Misc | ||
| Colors |
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| Stand-by (h) | - | 840 |
| Talk time (h) | - | Up to 27 h 30 min (2G) / Up to 20 h 30 min (3G) |
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