照相机
| 视频录制模式 |
720p, 1080p |
| 内置闪光灯 |
Y |
| 前置摄像头分辨率（数字） |
0.9 MP |
| 视频录制 |
Y |
| Maximum frame rate |
30 fps |
| 数字变焦 |
4 x |
| 自动对焦 |
Y |
| 前置摄像头 |
Y |
| 后置摄像头分辨率（数字） |
8 MP |
| 闪光类型 |
LED |
| 地理标签 |
Y |
呼叫处理
| 会议呼叫能力 |
Y |
| 快速拨号 |
Y |
| 振动提示 |
Y |
| 呼叫等待 |
Y |
| 主叫号码 |
Y |
| 免提听筒电话 |
Y |
| 通话计时器 |
Y |
| 呼叫转移 |
Y |
| 通话保持 |
Y |
联网
| 2G 频段（次 SIM） |
1900, 1800, 900, 850 MHz |
| 可支持的3G频段 |
850, 900, 2100 MHz |
| SIM卡类型 |
MicroSIM |
| 无线局域网连接 |
Y |
| 近场通信（NFC） |
Y |
| 3G |
Y |
| 蓝牙 |
Y |
| SIM卡插槽 |
Dual SIM |
| 2G标准 |
GSM |
| 共享（调制解调器模式） |
Y |
| 3G标准 |
WCDMA |
电池
| 通话时间（3G） |
17.5 h |
| 通话时间（2G） |
26.5 h |
| 连续视频播放时间 |
8.6 h |
| 音频连续播放时间 |
86 h |
| 浏览时间（Wi-Fi 无线网络） |
10.8 h |
导航
| GPS |
Y |
| 全球导航卫星定位系统（格洛纳斯系统GLONASS） |
Y |
| Wi-Fi定位 |
Y |
| GPS |
Y |
| 辅助GPS功能（A - GPS) |
Y |
显示器
| 像素密度 |
294 ppi |
| 触控技术 |
Multi-touch |
| 方位感应器 |
Y |
| 显示类型 |
IPS |
存储介质
| USB大容量 |
Y |
| 最大内存卡大小 |
128 GB |
| 内部存储容量 |
8 GB |
性能
| 话筒静音 |
Y |
| 个人信息管理 |
Alarm clock, Calculator, Calendar, Events reminder, Notes, To-do list |
| 视频通话 |
Y |
| 主题 |
Wallpapers |
| 飞行模式 |
Y |
| 个性化 |
Shortcuts, Menu, Icons |
| 支持联络小组 |
Y |
信息系统
| 短信服务(SMS) |
Y |
| 邮件 |
Y |
| 聊天 |
Y |
| MMS(多媒体信息服务) |
Y |
| 即时传讯（IM） |
Y |
端口 & 界面
| USB 连接器形状 |
Micro-USB |
| USB版本 |
2.0 |
| USB端口 |
Y |
认证标准
| 身体辐射值（SAR）(欧洲) |
0.60 W/kg |
| 头部辐射值（SAR）（欧洲） |
0.69 W/kg |
| DLNA认证 |
Y |
Lumia 640 Dual-SIM - 5" 1280 x 720 IPS LCD 294 ppi, WCDMA, GSM, Qualcomm Snapdragon 400 Quad core 1200 MHz, RAM: 1 GB, 8.0 MP, Wi-Fi, Bluetooth, NFC, A-GLONASS, A-GPS, Windows Phone 8.1 Lumia Denim
<b>Life made easier</b>
Open the box and power on your Lumia 640 Dual SIM to the full range of free Microsoft services built in and ready to go. Connect to friends and family with Skype, enjoy instant access to your photos and music on OneDrive, and edit files with Microsoft Office from wherever you are. Balancing your work life and personal life just became easier.
<b>Work your way</b>
Buy a new Lumia 640 Dual SIM and a 12 month Office 365 Personal subscription is included. Excited? We’ll tell you more soon…
<b>Power-infused performance</b>
Loaded with all the power you need, the Lumia 640 Dual SIM works as fast and efficiently as you do. It’s a workhorse that lets you concentrate more on what you're doing at any moment, with its quad-core Qualcomm® Snapdragon™ 400 processor and Microsoft Office built in. And you’ll have plenty of juice to help you achieve more with the whopping 2500 mAh battery.
<b>Capture your world with clarity</b>
Want to relive your favorite moments? Capture all of them with superb quality and ease using the Lumia Camera app and 8 MP rear camera, then back them up to OneDrive where you get up to 30 GB of free storage to bring back the moment. And with the wide-angle, front-facing camera, let your family and friends see more of your surroundings clearly in your free HD Skype video calls.
<b>Your favorite apps in a whole new way</b>
Get all the apps and games you want and see them come to life on the 5" (12.7 cm) HD display. Take your pick from a growing selection of hundreds of thousands of apps in Windows Phone Store – from Trip Advisor to Instagram to WhatsApp to Candy Crush Saga. They’re all available and always secure.
<b>A little goes a long way</b>
It’s the small things in life that make a big difference. From the convenience of Action Center to the magic of Live Tiles, the simplicity of Windows Phone makes everyday tasks easier so you can focus on doing what you love.
<b>Accessible at any time</b>
Easily manage your mobile costs and be reachable to all your friends and colleagues with Smart Dual SIM, allowing you to enable call waiting and call forwarding between two SIM cards. Operator charges may apply.
