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Color: Platinum Gray

K40 - Platinum Gray - 32 GB isn't available.

  • LG K40TM is excellence made affordable. The 5.7-inch HD+ FullVision display provides vibrant viewing of pictures, videos, web content and more. And the feature-rich 13MP AF rear and 5MP front cameras will capture your favorite memories.

  • Key Features

    • 5.7" HD+FullVision display
    • 13 MP rear camera, 5 MP front
    • 3D surround sound
    • Fingerprint ID


    Size (inches)6.02 x 2.83 x 0.32
    Weight (ounces)5.11


    Display size (inches)5.7 inches
    Resolution (pixels)1440x720
    Colors16 million

    Camera & video

    Rear-facing camera13 MP, 4160 x 3120 (default), 4x zoom, flash
    Video capture1080p (1920x1080) @30fps: H.264+AAC (up to 4GB)
    720p (1280x720) @30fps: H.264+AAC (up to 4GB)
    QCIF (176x144)@15fps : MPEG4+AMR(MMS only)
    Video playbackH.263: 704 x 576 @ 30fps, 15Mbps
    MPEG4,XviD,H.264, VP9: 1920x1080@30fps, 20Mbps
    H.265: 1920x1080@30fps, 10Mbps
    THEORA: 640 X 480@24fps, 3Mbps
    MJPEG: 1280 X 720@30fps, 30Mbps
    Front-facing camera5 MP, 2560 x 1920 (default), flash
    Other featuresAI CAM (front and rear cameras): Intelligently recognizes the subject and automatically applies the best effect. Portrait (front camera): Bokeh effect blurs the background while keeping the subject in focus. Auto shot (front camera): Selfie pose will automatically recognize an individual’s face and take a selfie after a 2 second countdown is triggered. Gesture shot (front camera): Conveniently trigger the shutter with a simple gesture. Burst shot (front and rear cameras): Take multiple shots quickly by pressing and holding the camera icon. Timer (front and rear cameras): Allow for a 3 or 10 second timer to be set to allow photographer to join the shot.


    Battery capacity3000mAh (non-removable)
    Talk time (hours)Up to 11 hours (VoLTE)
    Standby time (days)17
    Audio playback time (hours)Speaker: up to 23 hours
    Headset: up to 77 hours
    Time to charge to 50%Up to 75 minutes
    Time to charge to 100%Up to 160 minutes


    ChipsetCoretex A53
    Cores8 at Up to 4 x 2.0GHz + 4 x 1.5GHz


    Internal memory storage32GB
    Expandable memory storageUp to 2T
    Memory formatmircoSD™

    Operating System

    Android®Yes. 9 (Pie)
    Voice dialing and voice commandsYes

    Wireless technology

    4G LTEBands 2, 4, 5, 12, 29, 30, 14, and 66
    3G - UMTS850/1900/1700Mhz
    World phoneQuad-band
    HD Voice capableYes
    Wi-Fi Calling capableYes
    AT&T Video call capableYes
    Wi-Fi connectivity802.11B/G/N/I/R
    Wi-Fi-capablity2.4 GHz
    Near Field Communication (NFC)SECURE
    Bluetooth® technologyv5.0 + EDR, A2Dp, LE, aptX®
    Mobile hotspotUp to 10 devices
    Enhanced Push-to-TalkNo
    FirstNet Push-to-TalkNo
    Noise suppressionNoise suppression by NXP® Solution
    Wireless emergency alerts (CMAS) capableYes
    SIM typeNano


    Preloaded apps from AT&TAdvanced Messaging, AT&T Call Protect, AT&T Device Help, AT&T DriveMode, AT&T Hot Spots, AT&T Messages Backup & Sync, AT&T Mobile Security, AT&T ProTech, AT&T Remote Support, AT&T Setup & Transfer, AT&T Smart LimitsSM, AT&T Smart Wi-Fi, AT&T Video Call, AT&T Visual Voicemail, AT&T Wi-Fi Calling, DIRECTV (DTVe), iQi, Mobile Services Manager (Games), myAT&T
    Preloaded apps from OEMBackup/LG Switch, Email, File Manager, Gallery, LG Bridge, LG Music, LG Smartworld, QuickMemo +, Smart Cleaning
    Additional appsAmazon® Shopping, Facebook®, Facebook App Manager, Gmail™, Google™, Google Docs™, Google Drive™, Google Pay™, Google Photos™, Google Play™ Movies & TV, Google Play™ Music, Google Play Services, Google Play™ Store, Google™ Search, Google Sheets™, Google Slides™, YouTube®
    myAT&TProvides fast, easy account access virtually anywhere, anytime
    Web browserGoogle Chrome™


    SensorsAccelerometer, Gyroscope, Ambient Light, Proximity, Fingerprint

    Messaging & email

    Text messagingInsert pictures, video clips and sound clips easily (messaging charges apply)
    Advanced MessagingRCS Universal Profile 1.0 (UP 1.0) compatible for larger file transfers and group messages with other UP 1.0 users. See when messages are delivered, read and when others are typing a response.
    Mobile emailPOP3/IMAP4, SMTP, Gmail™, Push via Microsoft® Exchange ActiveSync®, Yahoo!®, Hotmail®
    Microsoft Direct PushYes


    Music playerGoogle Play™ Music, LG Music
    Supported music formatsAAC, AAC+, eAAC+, AMR-NB, AMR-WB, FLAC, MP3, MIDI, Vorbis(OGG), PCM, ADPCM, WMA, OPUS, ALAC
    External music play controlsVia lockscreen


    Hearing Aid (HAC) ratingM4,T3
    TTY/TTD compatibleYes
    Real Time Text (RTT) capableYes


    Device Eco-ratingThe 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, for a total rating of 1 to 5 stars: 19-20 (5-star), 16-18 (4-star), 13-15 (3-star), 10-12 (2-star), 8-9 (1-star)
    Substances of concern4/4
    Environmentally preferable materials1/3
    Energy efficiency and charging1/1
    End of life and recycling2/2
    Environmentally and socially responsible manufacturing10/10
    Total Eco-score18/20 (4-star) Please visit for additional information

    Product codes

  • QuickStart Guide
    Charging block
    USB micro