Below is the AT&T Microsoft Lumia 640 XL full specifications and everything you need to know about AT&T Microsoft Lumia 640 XL.

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Operating System

Windows Phone 8.1 with Lumia Denim


Qualcomm Snapdragon 400

Quad core

Clock rate: 1200 MHz


Mass memory: 8GB


Maximum memory card size: 128GB

Expandable memory card type: MicroSD

Free cloud storage up to 30GB1


GSM network: 850MHz, 900MHz, 1800MHz, 1900MHz

GSM max data speed DL: EGPRS 296.0kbps

GSM max data speed UL: EGPRS 236.8kbps

WCDMA network: Band 1 (2100MHz), Band 2 (1900 MHz), Band 4 (1700/2100 MHz), Band 5 (850MHz)

WCDMA max data speed DL: 42.2Mbps (Cat 24)

WCDMA max data speed UL: 5.76Mbps (Cat 6)


5.7″ HD720 (1280 x 720)

TrueColor (24-bit/16M)

ClearBlack, IPS LCD


Orientation sensor, low power mode, sunlight readability enhancements, Corning Gorilla Glass 3, easy to clean, Lumia color profile, wide viewing angle

Capacitive Multipoint-Touch


Replaceable battery



Max standby time: 39 days

Max talk time (2G): 31.3 hr

Max talk time (3G): 23.7 hr

Max music playback time: 102 hr

Max Wi-Fi network browsing time: 14.3 hr

Max video playback time: 11.7 hr

Main camera

13MP with auto focus

Digital zoom: 4x

ZEISS optics

Sensor size: 1/3″

F-number/aperture: f/2.0

Focal length: 28mm

Flash type: LED flash

Features: Backside-illuminated image sensor, Dynamic flash, Rich capture

Minimum focus range: 10cm

Front-facing camera

Full HD 5MP wide angle

F-number/aperture: f/2.4

Features: Focal length 24mm, Still image capture, Video call, Video recordingFront camera video resolution: 1080p (Full HD, 1920 x 1080)

Video recording

Main camera video resolution: 1080p (Full HD, 1920 x 1080)

Video frame rate: 30fps

Video zoom: 4x

Video recording features: Video zoom, Continuous autofocus, Video light

Video recording formats: MP4/H.264


Recording codecs: AAC LC, AMR-NB, GSM FR

Recording: Mono

Playback: Audio Streaming, Cloud music offline playback, Cloud music playback, Graphical equalizer, Media Player, Music Player, Podcasts, Virtual surround

Radio features: Internet Radio, FM Radio5

Video playback

Codecs: H.263, H.264/AVC, MPEG-4, VC-1, Windows video


Design details: Exchangeable back cover

Other user interface features: Double-tap to wake, Glance screen, Tactile feedback, Vibrating alerts, Voice commands, Word Flow keyboard


Ambient light sensor, Accelerometer, Proximity sensor, Magnetometer, SensorCore

Device security

General Security features: Device lock, PIN code, Device lock passcode, Regular signed firmware updates, Track and Protect via internet, Application certification, Application sandboxing, Backup and restore via Internet, Browser integrated anti-phishing, Remote device lock via Internet, Remote device wipe via Internet, Secure boot, Signed OS, Consumer VPN

Enterprise security features: Mobile VPN, Remote lock and wipe, Hardware accelerated device encryption, Mobile device management, Remote security policy enforcement

Supported security standards: TLS v1.0, TLS v1.1, TLS v1.2, SSL v3.0, Suite B ciphers

Wi-Fi security modes: EEAP-TTLS/MSCHAPv2, WPA, WEP, EAP-AKA, PEAP-MSCHAPv2, WPA2 (AES/TKIP), WPA2-Enterprise, WPA2-Personal, EAP-TLS, WPA-Enterprise, EAP-SIM, WPA-Personal


Micro SIM

3.5mm audio connector


System connectors: Micro-USB-B

USB 2.0

Bluetooth 4.0

Bluetooth profiles: Advanced Audio Distribution Profile (A2DP) 1.2, Audio/Video Remote Control Profile (AVRCP) 1.4, Generic Attribute Profile (GATT), Hands-free profile (HFP) 1.6, Human Interface Device Profile (HID), Object Push profile (OPP) 1.1, Personal Area Network Profile (PAN) 1.0, Phone Book Access Profile (PBAP) 1.1, Message Access Profile (MAP)

NFC: Pairing, Sharing, Tagging

Wi-Fi: WLAN IEEE 802.11 b/g/n

Wi-Fi hotspot: Up to 8 Wi-Fi-enabled devices

Other wireless connectivity: DLNA, Screen projection


6.22 x 3.21 x .35 inches (157.9 x 81.5 x 9 mm) (L x W x H)


6.03 ounces (171 grams)