Comparison of Microsoft Lumia 640 XL LTE and Acer Liquid X2 [S]ave
| Attribute |  Microsoft Lumia 640 XL LTE × |  Acer Liquid X2 × |
|---|---|---|
| General | ||
| Brand | Microsoft | Acer |
| Launch | ||
| Announced | 2015-03-01 | 2015-04-01 |
| Body | ||
| Width (mm) | 9 | 8.5 |
| Length (mm) | 157.9 | 153.3 |
| Height (mm) | 81.5 | 78.8 |
| Weight (g) | 171 | 166 |
| SIM | Micro-SIM | Triple SIM (Micro-SIM) |
| Network | ||
| Technology |
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| 2G bands |
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| 3G bands |
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| 4G bands |
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| Speed |
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| Platform | ||
| OS | Microsoft Windows Phone 8.1 | Android 5.1 (Lollipop) |
| Chipset | Qualcomm MSM8226 Snapdragon 400 (28 nm) | Mediatek MT6753 (28 nm) |
| CPU | Quad-core 1.2 GHz Cortex-A7 | Octa-core 1.3 GHz Cortex-A53 |
| GPU | Adreno 305 | Mali-T720MP4 |
| Memory | ||
| Card slot | microSDXC (dedicated slot) | microSDHC (dedicated slot) |
| Internal |
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| Display | ||
| Size (in) | 5.7 | 5.5 |
| Resolution (px) | 720 x 1280 | 720 x 1280 |
| Protection | Corning Gorilla Glass 3 | - |
| Display Type | IPS LCD | IPS LCD |
| Battery | ||
| Type | Li-Ion | Li-Po |
| Capcity (mAh) | 3000 | 4020 |
| Main Camera | ||
| Main Camera Type | Single | Single |
| Main Camera Properties |
|
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| Main Camera Video | 1080p@30fps | 1080p@30fps |
| Main Camera Features | Zeiss optics, LED flash | LED flash |
| Selfie Camera | ||
| Selfie Camera Type | Single | Single |
| Selfie Camera Properties |
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|
| Selfie Camera Video | 1080p@30fps | - |
| Selfie Camera Features | - | LED flash |
| Comms | ||
| WLAN | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 b/g/n, hotspot |
| Bluetooth | 4.0, A2DP | 4.0, A2DP, LE |
| 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) | 888 | 820 |
| Talk time (h) | Up to 30 h 20 min (2G) / Up to 24 h (3G) | Up to 23 h (3G) |
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