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Microsoft Lumia 640 XL

- Matte Black
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.
Microsoft Lumia 640 XL - Matte Black

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 30GB of free OneDrive storage, 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.

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

*Get 15GB for free when you sign up for OneDrive, and an additional 15GB when you choose to automatically back up your photos with OneDrive.  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.

Up to $25 savings: Compares a Mobile Share Value® plan discounted access charge for a smartphone line on a No Annual Service Contract option (AT&T NextSM, bring your own, pay full price, or month-to-month) to one on a 2-year contract. Savings will be $25 per smartphone line on plans 10GB and higher, and $15 for plans less than 10GB. Customers with smartphones on 2-year contracts (i) prior to February 2, 2014, on 10GB or higher plan, or (ii) prior to March 9, 2014, for 2GB to 6GB plans, are also eligible for this savings. Loss of Discount with Upgrade: If upgrading to a smartphone on a 2-year wireless contract, you will also lose the discount for that line. To receive the discounted charge in these scenarios, upgrade with AT&T Next or pay the full purchase price for your new smartphone. Loss of Discount with Plan Change: If you are currently on a 2GB to 6GB plan and are receiving the discounted access charge for a smartphone line on a 2-year wireless contract started between February 2 and March 9, 2014, and you increase your data to a 10GB or higher plan, you will lose the discount. Pricing, savings, terms, and restrictions are subject to change and may be modified, discontinued, or terminated at any time without notice.

AT&T Next: Requires 0% APR installment agreement. Tax due at sale. Credit: Well-qualified credit may be required. Some buyers will qualify only for AT&T Next with down payment. Not all buyers will qualify for any AT&T Next option. Service: Wireless service (voice and data) is required and is additional. Device balance due if wireless service canceled. Select locations only. Device Limits: Purchase limit may apply. Account limit of four devices via AT&T Next or tablet installment agreement (total of 2 tablets) may also apply. Activation or Upgrade fee: $15 per line. No upgrade fee for line with a smartphone purchased on AT&T Next prior to August 1, 2015. Waiver of fee subject to change. Restocking Fee: Up to $35. Upgrade option: Requires payment of number of required installments (24, 18, or 12) based on option chosen, account in good standing, trade in of your financed device in good physical and fully functional condition, and purchase of new eligible device with qualified wireless service. After upgrade, unbilled installments are waived. Service subject to Wireless Customer Agreement. Other fees may apply. Other monthly charges per line: May include taxes, federal and state universal service charges, a Regulatory Cost Recovery Charge (up to $1.25), a gross receipts surcharge, an Administrative Fee, and other government assessments which are not government-required charges. Coverage and service not available everywhere. Other restrictions apply and may result in service termination. Terms, restrictions, and options subject to change and may be modified, terminated, or discontinued at any time without notice. Visit for AT&T Next details.

AT&T NextSM options: AT&T Next has the following 0% APR installment agreement options: (1) AT&T Next 24 requires a 30-month agreement and allows you to trade in and upgrade after 24 installments; (2) AT&T Next 18 requires a 24-month agreement and allows you to trade in and upgrade after 18 installments; (3) AT&T Next 12 requires a 20-month agreement and allows you to trade in and upgrade after 12 installments; and, (4) AT&T Next with down payment requires 30% down payment and a 28-month agreement and allows you to trade in and upgrade after 12 installments.

Examples: For example, a smartphone with a regular price of $825.99 will be (1) $27.54 per month for 30 months on AT&T Next 24; (2) $34.42 per month for 24 months on AT&T Next 18; (3) $41.30 per month for 20 months on AT&T Next 12; and (4) $247.80 down and $20.65 per month for 28 months on AT&T Next with down payment.

Limited-time offer. Requires new 2-year wireless agreement with qualified plan including voice and data. Subject to Wireless Customer Agreement. Credit approval required. Upgrade or Activation fee: $45 per line. Geographic, usage, and other terms, conditions, and restrictions apply and may result in service termination. Equipment price and availability may vary. Coverage and services not available everywhere. Taxes and other charges apply. Data ( If usage exceeds your monthly data allowance, you will automatically be charged overage for additional data provided. Early Termination Fee ( After 14 days, ETF up to $325. Restocking fee: up to $35. Other monthly charges per line: May include federal and state universal service charges, a Regulatory Cost Recovery Charge (up to $1.25), a gross receipts surcharge,an Administrative Fee, and other government assessments. These are not taxes or government-required charges. Pricing subject to change.

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

$300 Credit: Limited-time offer. $100 switcher bill credit plus $200 trade-in credit. New lines only. Excludes upgrades. May not be combinable with other discounts, offers, or credits. AT&T Next: Requires eligible installment agreement. Tax due at sale. Down payment may be required. Qualifying Service: Requires qualifying postpaid voice and data service. Excludes GoPhone®, Cricket, Lifeline, residential wireless, and select discounted plans. Activation or Upgrade Fee: $15 per line on August 1, 2015. No upgrade fee for line with smartphone purchased on AT&T Next prior to August 1, 2015. Waiver of fee subject to change. Restocking: If return within 14 days, up to $35 fee. Deposit: may be required. Device limit: Purchase limit and limit on total number of financed devices may apply. $100 Switcher Bill Credit: Limited-time offer. Requires porting eligible number to AT&T from an eligible carrier (excludes Cricket) and buying a smartphone on AT&T Next in the same transaction. Must be active and in good standing for 45 days. Credit received within 90 days. $200 Trade-In Credit: Select locations. Smartphone trade-in must be in good working condition, have at minimum a standard $10 buyback value, and meet AT&T Buyback program requirements. If purchased via, you will be emailed a promotional code after eligible purchase ships to complete trade in and receive $200 trade-in credit. Code expires not less than 30 days after receipt. Trade-In Credit: Provided either an instant credit or a promotion card. Private label AT&T Promotion Card ("Card") issued by MetaBank™ or CenterState Bank of Florida NA, via a license from Visa U.S.A. Inc. In AT&T-owned stores, provided an instant credit to spend that day or a Card. If do not spend entire instant credit, balance may be used to pay wireless bill or get Card. At will get a Card. Cards received in about 3 weeks after receipt of eligible trade-in and validation of condition. Credit and Card may be used only toward purchases of AT&T products and services in AT&T-owned retail stores, at, or to pay wireless bill. Card is not redeemable for cash and may not be used for withdrawal at cash-dispensing locations. Expiration date will be printed on front of card and will not be less than 90 days from receipt. Participating dealers provide savings for use at time of trade in or a dealer promotion card. Dealer cards contain additional terms and conditions, and may only be used at specified dealer. Gen. Wireless Service Terms: Subject to Wireless Customer Agreemen.t Other fees, monthly charges, overage charges, and restrictions apply. Offer, terms, fees, restrictions, and options subject to change and may be modified, discontinued, or terminated at any time without notice. Coverage and service not available everywhere. Visit for more offer details.

Microsoft Surface 3 Offer: Limited-time offer. Offer available at AT&T-owned stores,, and participating dealers only. Must buy a new Windows smartphone on an AT&T NextSM installment agreement with qualified monthly wireless service plan (voice and data). Devices eligible for promotion subject to change. Must buy Microsoft Surface 3 tablet on a new 2-year wireless agreement with qualified monthly data plan. Must buy items together and select locations may require bundled items to be in-stock. Credit applied at time of purchase. Online Restrictions: If upgrading to a new device on, this offer is not available. Please visit a store. Discounts: Offer may not be combinable with credits, discounts, and offers. Device Limits: Purchase limit and limit on financed devices per wireless account may apply. Device prices may vary by location. Return/Restocking: If you return the phone within 14 days without the tablet, you will owe $100 + $35 restocking fee; if you return the tablet but keep phone, you will owe 10% restocking fee. Restocking fee of $35 on phone and 10% of tablet purchase price may apply. 2-year Wireless Agreement: Activation/upgrade fee up to $40 per line. Early Termination Fee ( After 14 days, up to $325 on phone and up to $150 on tablet. AT&T NextSM: $0 down option for well-qualified customers only. Down payment option may be available with qualified credit. Wireless service (voice and data) also required and is additional. Tax due at sale. Deposit may be required. If wireless service is canceled, remaining device balance is due. Visit for details. General Wireless Service Terms: Subject to Wireless Customer Agreement or, for business/government customers, applicable service agreement.  Other Monthly Charges Per Line: May include taxes and federal or state universal service charges, a Regulatory Cost Recovery Charge (up to $1.25), a gross receipts surcharge, an Administrative Fee, and other government assessments (including without limitation a Property Tax Allotment surcharge of $0.20 - $0.45 applied per Corporate Responsibility User’s (CRUs) assigned number) which are not government required charges. Pricing, terms, options, fees, and restrictions subject to change and may be modified, discontinued, or terminated at any time without notice.  Coverage and services not available everywhere. Other restrictions apply and may result in service termination.

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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