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Microsoft Lumia 640 XL

Microsoft Lumia 640 XL - Matte Black



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    Most in-stock items will arrive within 2 business days. See details.


    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.

  • ECO-RATING 2.0 – Make an informed choice


    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.

    Eco-Rating 2.0 System

    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

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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




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

Legal Terms/Offer Details

*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.

For more details, see Wireless Legal

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