Microsoft Lumia 640 LTE
Microsoft Lumia 640 LTE Windows Mobile smartphone. চালুর তারিখ Mar 2015. ফিচার: 5.0″ IPS LCD ডিসপ্লে, Snapdragon 400 chipset, 8 MP primary ক্যামেরা, 1 MP front ক্যামেরা, 2500 mAh ব্যাটারি, 8 জিবি storage, 1000 MB রেম, Corning Gorilla Glass 3.
| Network (নেটওয়ার্ক) | Technology | GSM / HSPA / LTE |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | |
| 3G bands | HSDPA 850 / 900 / 2100 | |
| HSDPA 850 / 1700(AWS) / 1900 / 2100 - T-Mobile | ||
| 4G bands | LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800) | |
| LTE band 1(2100), 2(1900), 4(1700/2100), 5(850), 7(2600), 12(700), 17(700) - T-Mobile | ||
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | |
| GPRS | Yes | |
| EDGE | Yes |
| Launch (চালু) | Announced | 2015, March |
|---|---|---|
| Status | Available. Released 2015, April |
| Body (বডি) | Dimensions | 141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
|---|---|---|
| Weight | 145 g (5.11 oz) | |
| SIM | Micro-SIM |
| Display (ডিসপ্লে) | Type | IPS LCD capacitive touchscreen, 16M colors |
|---|---|---|
| Size | 5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio) | |
| Resolution | 720 x 1280 pixels, 16:9 ratio (~294 ppi density) | |
| Multitouch | Yes | |
| Protection | Corning Gorilla Glass 3 | |
| - ClearBlack display |
| Device Platform প্লাটফর্ম | OS | Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10 |
|---|---|---|
| Chipset | Qualcomm MSM8926 Snapdragon 400 (28 nm) | |
| CPU | Quad-core 1.2 GHz Cortex-A7 | |
| GPU | Adreno 305 |
| Device Memory (মেমোরি) | Card slot | microSD, up to 256 GB (dedicated slot) |
|---|---|---|
| Internal | 8 GB, 1 GB RAM |
| Main Camera (ক্যামেরা) | Single | 8 MP, f/2.2, 28mm (wide), 1/4", AF |
|---|---|---|
| Features ফিচার | LED flash | |
| Video | 1080p@30fps |
| Selfie camera | Single | 1 MP |
|---|---|---|
| Video | 720p |
| Sound (সাউন্ড) | Alert types | Vibration; MP3, WAV ringtones |
|---|---|---|
| Loudspeaker | Yes | |
| 3.5mm jack | Yes |
| Comms | WLAN | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
|---|---|---|
| Bluetooth | 4.0, A2DP | |
| GPS | Yes, with A-GPS, GLONASS, BDS | |
| NFC | Yes | |
| Radio | FM radio | |
| USB | microUSB 2.0 |
| Features ফিচার | Sensors | Accelerometer, proximity, compass |
|---|---|---|
| Messaging | SMS(threaded view), MMS, Email, Push Email, IM | |
| Browser | HTML5 | |
| - MP3/WAV/eAAC+/WMA player - MP4/H.264/WMV player - OneDrive (30 GB cloud storage) - Document viewer - Photo/video editor |
| Battery ব্যাটারি | Removable Li-Ion 2500 mAh battery | |
|---|---|---|
| Stand-by | Up to 864 h (2G) / Up to 864 h (3G) | |
| Talk time | Up to 26 h 30 min (2G) / Up to 17 h 30 min (3G) |
| Misc | Colors | Glossy cyan, Orange, White, Matte black |
|---|---|---|
| Price | About 120 EUR |
| Tests | Display (ডিসপ্লে) | Contrast ratio: 1034 (nominal),2.563 (sunlight) |
|---|---|---|
| Camera (ক্যামেরা) | Photo / Video | |
| Loudspeaker | Voice 70dB / Noise 65dB / Ring 75dB | |
| Audio quality | Noise -93.1dB / Crosstalk -93.2dB | |
| Battery ব্যাটারি life | Endurance rating 76h | |