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Microsoft-Lumia 640 XL-Matte Black

Microsoft Lumia 640 XL - Matte Black

Microsoft Lumia 640 XL

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The Microsoft Lumia 640 XL comes equipped with a big 5.7" HD screen - optimized for getting things done when you're not at your desk – and Cortana, your proactive personal assistant. Everyone should have a personal assistant, and now everyone can. Whether it's screening your calls, keeping track of things that interest you, giving you reminders or helping you get to places on time, Cortana makes life a whole lot easier. Introducing the Lumia 640 XL.

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Product Details

More productivity at an affordable price

Achieve more

Take your work beyond the office walls with the Microsoft® Lumia 640 XL. With built-in productivity tools and 4G LTE connectivity, working on the go is a seamless experience. Key features include:

  • Windows Phone® 8.1
  • 5.7” HD display
  • Microsoft® Office and OneDrive®
  • 13MP rear- and 5MP front-facing cameras


A personalized experience

Windows Phone 8.1 allows you to customize your own experience. With the Start Background feature you can personalize your start screen by adding a picture behind the Live Tiles. Add apps to your Live Tiles, resize them, and change their color to suit your taste.


Big and bold

View and do more with the large 5.7" HD screen, even when
you're not at your desk. Easily read emails, edit documents,
and surf the Web on the Corning® Gorilla® Glass 3
screen—even in low light.


Take your office virtually anywhere

Take your office with you with Microsoft Lumia 640 XL. Microsoft Office and OneDrive are built in, so you can edit projects on the go from your smartphone. Start a PowerPoint® on your PC, edit it from your smartphone, and finish it on your laptop. Plus, with OneDrive, you can securely back up files and share your favorite photo albums with friends and family.*


Don’t miss a moment

Capture the world around you with the 13MP rear-facing camera. The Moment Capture and Rich Capture camera modes make it easier to take the perfect shot even in challenging conditions. Plus, the 5MP full HD front-facing camera features a wide-angle lens that is ideal for taking selfies or making Skype® video calls.

ECO-RATING 2.0 – Make an informed choice

Eco-Rating 2.0 System

The AT&T Eco-Rating 2.0 system gives you environmental and social details about this device. The system uses a total of 20 performance criteria across 5 different attributes.
Attribute Points
Substances of concern 4/4
Environmentally preferable materials 1/3
Energy efficiency and charging 1/1
End of life and recycling 2/2
Environmentally and socially responsible manufacturing 9/10
Total Eco-Score 17/20

Learn more about Eco-Rating 2.0

Key Features Manual & Tutorial


The latest generation WP 8.1 delivers a personal experience with features including Cortana™, Office, Outlook®, and OneDrive®.


On the go or at home, the expansive 5.7” HD screen with Corning® Gorilla® Glass 3 delivers a larger-than-life experience.


Take your work beyond the office walls with productivity tools including Word, Excel®, PowerPoint®, and OneNote®.


Don’t miss a moment with the 13MP rear-facing and 5MP front-facing cameras.




Rear-facing camera
Live video capture and playback
1080p and 720p @ 30/25/24 fps (time limit based on available storage capacity)
Front-facing camera
5MP wide angle lens optimize for selfies and Skype®


Shooting Options

Moment Capture
Extract great still images or action shots from a video by tapping the Lumia Moments icon in the camera roll, rather than choosing a capture mode upfront.
Rich Capture
Rich Capture delivers even better images in challenging conditions by combining multiple exposures to create one perfect shot.



Music player
MixRadio, Xbox® Music
Supported music formats
MP3, WMA, AAC, AAC+, eAAC+, M4A, WAV, GSM FR, GSM HR, EFR, AMR-NB, AMR-WB, ADPCM, G.711, 3GP, AC3, e-AC3, MPEG-4, H.263 Profile 0, H.264, Windows Video
Subscription music services
MixRadio, Xbox® Music
Streaming radio
Built-in FM Radio
Wired headphones required to serve as FM radio antenna (sold separately)
Customizable equalizer
Create music playlists
External music play controls
Via lock screen (and wired headsets)



Text messaging
Insert pictures, video clips, and sound clips easily (messaging charges apply)
Instant Messaging (IM)



Mobile Email
POP3/IMAP, Gmail™, Hotmail, Microsoft® Exchange ActiveSync®, and more
Microsoft Direct Push
Good™ Mobile Messaging


Video & Web

Web browser
Internet Explorer® 11



Cool Tools
Amazon™ Shopping, Battery Saver, Facebook®, HERE Drive+™, HERE Maps™, Lumia Beamer, Lumia Camera, Lumia Cinemagraph, Lumia Creative Studio, Lumia Help + Tips, Lumia MixRadio, Lumia Moments, Lumia Selfie, Lumia Storyteller, Microsoft® Office, Skype, Storage Sense, OneDrive™, OneNote®, Xbox® (Games, Music, Video)
Preloaded apps from AT&T
AT&T Address Book, AT&T FamilyMap®, AT&T Navigator®, AT&T Hot Spot, AT&T Locker™, AT&T Mobile Hotspots, AT&T Mobile TV®, Driving Mode (via device setting), Keeper, Mark the Spot, YPmobile®
Provides fast, easy account access virtually anywhere, anytime



Glance Screen
Alarm clock
Call waiting
Caller ID
Address book
Conference calling
Call forwarding
Use voice and data simultaneously
Accelerometer, Ambient Light, Magnetometer, Proximity



Device Eco-rating
4 stars. Visit for additional information.



World phone
USB connectivity – transfer data through a USB cable
micro USB 2.0 (USB cable included)
Hands-free speakerphone
Voice dialing and voice commands
Hearing Aid (HAC) rating
TTY/TTD compatible
Enhanced Audio
Noise suppression by Microsoft®
AT&T Device Help
Device Help provides easy access to step by step tutorials and videos about features, functions and AT&T services directly from the web browser on the device (data charges apply).
Wireless Emergency Alerts-capable

Technical Specifications


3000 mAh (removable)
Talk Time (hours)
Up to 25
Standby time (days)
Up to 28


Size (inches)
Weight (ounces)


Qualcomm® Snapdragon® 400
1.2GHz quad-core CPU and Adreno™ 305 GPU


Internal memory storage
Up to 8GB
Expandable memory storage
Up to 128GB
Memory format
Up to 1GB

Wireless Technology

Bands 1, 2, 3, 4, 5, 7 and 17
HSPA+ with enhanced backhaul
HD Voice Capable***
Wi-Fi connectivity
802.11 b/g/n
5GHz Wi-Fi-capable
Near Field Communication (NFC)
Bluetooth® technology
v4.0 LE
Mobile Hotspot
Up to 8 devices
FOTA capable – Upgrade Firmware Over The Air

Operating System

Windows Phone®
Windows Phone® 8.1


Size (inches)
5.7" Corning® Gorilla® Glass 3, ClearBlack®
Resolution (pixels)
1280 x 720, IPS LCD, 259ppi, 16:9 Aspect Ratio
16 million


Predictive text for fast typing
WordFlow keyboard

What's in the box?

Micro-USB Sync Cable
AC Charger
Quick Start Guide

*Data connectivity and Microsoft account required to access OneDrive.

**You need a Microsoft® account to use Cortana. This feature is not available in all languages. For information on the supported languages, go to

***HD Voice has limited availability in select markets. May not be available in your area. Deployment is ongoing. HD Voice Requirements: To experience HD Voice, both parties on the call must be located in an AT&T HD Voice coverage area and have an AT&T HD Voice-capable device and SIM with HD Voice set up on their account. HD Voice-capable device selection is limited at this time. Incompatible Services/Features: The following services/features are currently incompatible with HD Voice: prepaid service, Smart Limits, Ringback Tones, and OfficeDirect and OfficeReach (for business customers). HD Voice is available at no additional cost; standard voice rates apply and are charged according to your wireless rate plan. Demo provides example of actual HD Voice call. Results not guaranteed.

AT&T NEXT® OR AT&T NEXT EVERY YEAR℠: For smartphones only. Divides retail price into monthly installments. Requires 0% APR monthly installment agreement and eligible service. Tax due at sale. $0 down requires well-qualified credit or a 30% down-payment option is available. Pay more up front and the remainder of retail price is divided into 30 or 24 monthly installments. AT&T Next: 30-month agreement with trade-in to upgrade when 80% of retail price is paid off. AT&T Next Every Year: 24-month agreement with trade-in to upgrade when 50% of retail price is paid off. Service: Eligible postpaid service (voice and data) is required and extra. If service is canceled, remaining installment agreement balance is due. Examples: $749.99 retail price (1) on AT&T Next is $0 down and $25 per month or $225 down and $17.50 per month; or (2) on AT&T Next Every Year is $0 down and $31.25 per month or $225 down and $21.88 per month. Activation or upgrade fee: $20. No upgrade fee for line with a smartphone purchased on an installment agreement prior to August 1, 2015. Waiver of fee subject to change. Limits: Purchase limit applies. Upgrade with eligible trade-in: Requires payment of percentage of retail price (50% or 80%), account in good standing, trade-in of financed device (or one of the same make and model) in good physical and fully functional condition through the AT&T Next or AT&T Next Every Year trade-in program (excludes AT&T trade-in program where you receive an instant credit or AT&T promotion card), and purchase of new eligible smartphone with qualified wireless service. After upgrade, unbilled installments are waived. GENERAL WIRELESS SERVICE: Subject to wireless customer agreement ( Services are not for resale. Deposit: May be required. Device limits: Purchase limits apply and prices vary by location. Credit approval, restocking and other fees, monthly, overage, and other charges, and usage and other restrictions per line may apply. Pricing and terms are subject to change and may be modified or terminated at any time without notice. Coverage and service are not available everywhere. You get an off-net (roaming) usage allowance for each service. If you exceed the allowance, your services may be restricted or terminated. Other restrictions apply and may result in service termination.

SWITCH OFFER: Ltd time (ends 12/31/16 in Puerto Rico). Each line reqs an eligible port-in, trade-in, purchase, svc & final bill submission. Credits may not equal all costs of switching.  Elig. port-in: From eligible carrier (excludes Cricket & select others) on their term agmt or device plan (excludes 3rd party agmts).  Must buy elig. smartphone in same transaction. Elig. Purchase/Svc: Smartphone on AT&T Next or AT&T Next Every Year agreement w/elig. svc (excludes prepaid, Lifeline, Residential Wireless and select discounted plans). Acct & svc must remain active & in good standing for 45 days. Tax due at sale. Down payment may be req’d. If svc is cancelled, installment agmt balance is due.  Limit: Purch. limits apply. Trade-in: Select locations. Must be smartphone on line ported, be in good working condition w/ min. $5 trade-in value & meet AT&T Trade-in program reqmts. Trade-in Credit: Instant credit or private label AT&T Promotion Card issued by MetaBank™ or CenterState Bank of Florida NA, via license from Visa U.S.A. Inc. (may take 3 weeks to receive). Credit/Card valid for 5 months & for  use only to purch. AT&T products & svc in AT&T owned retail stores, at, or to pay wireless bill. At participating dealers get credit (w/ add’l terms) for use at dealer. Final Bill: Must go to & upload or mail final bill w/in 60 days showing Early Termination Fee (ETF) or device plan balance (incl. lease purch. costs) on number ported. Final Credit: Total amount equals device balance/ETF (excludes taxes, fees, svc & other charges) up to $650 minus trade-in.  Get up to $640 for device plan balance or up to $340 for ETF.  W/in 4 wks after meet elig. reqmts, are mailed AT&T Promotion Visa Prepaid Card issued by CenterState Bank of Florida NA, via license from Visa U.S.A. Inc. Not redeemable for cash & non-transferable. For use at US locations where Visa cards are accepted through date printed on card (min. 150 days). Add’l cardholder terms & conditions apply & are provided w/Prepaid Card. See for offer details.

FREE Express Shipping: Postpaid orders will be processed and shipped subject to credit approval, inventory availability, and validation of a proper shipping address and other information. Orders received after 4 p.m. CT will be processed the next business day. Inventory, credit, or other issues may delay shipment. No holiday, Saturday, or Sunday processing or delivery. Shipping policy is subject to change. Please note: It may take up to 24 hours to process your order if there are any issues with the credit approval process and/or the shipping address validation process. This 24-hour period is not included in the delivery time and should be taken into account in your order placement timing. Delivery signatures may be required. Priority Shipments to Puerto Rico and the U.S. Virgin Islands may take more than 2 business days. Actual delivery date may also be affected by government processing, unforeseen weather, and shipping carrier delays. Learn more about AT&T shipping options at

4G LTE not available everywhere. LTE is a trademark of ETSI.

All talk, data, and standby times depend on network configuration.

All marks contained herein are the property of their respective owners.

Service provided by AT&T Mobility.

Item SKU: 6736A(Microsoft Lumia 640 XL - Matte Black)

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