• 5.7" HD+ FullVision Display
  • 8MP Autofocus Rear Camera with Fast Catch
  • 5MP Front-Facing Camera with Front Flash Light
  • Rear Key with Fingerprint Sensor
  • 3,000 mAh Non-Removable Battery
LG K40™ | Unlocked
$ 179.99
Actual battery time may vary depending on network connectivity and application use.


    • Screen Size
    • Screen Resolution
    • 1440 x 720 pixels
    • Battery Capacity
    • 3,000 mAh Non-Removable
    • Rear Camera Resolution
    • 8 MP
    • Front Camera Resolution
    • 5 MP
    • Processor
    • 1.8 GHz Octa-Core Qualcomm Snapdragon™ SDM450
    • Memory
    • 2 GB RAM
    • Storage
    • 16GB (up to 8GB usable)*
    • Carrier
    • Verizon, Sprint, T-Mobile, Metro by T-Mobile (Carrier Compatibility: Please check with your carrier to verify compatibility.)
    • *
    • Usable memory varies depending on software versions and settings.


    • Display
    • 5.7" HD+, 1440 x 720 pixels
    • Platform
    • Android 8.1 (Oreo)
    • Processor
    • 1.8GHz Octa-Core Qualcomm Snapdragon™ SDM450
    • Technology
    • Frequencies
    • CDMA 1.9 GHz/800 MHz; GSM 850/900/1800/1900 MHz; LTE Bands 2/4/5/12/13/66
    • Dimensions
    • 6.02" (H) x 2.83" (W) x 0.32" (D)
    • Weight
    • 5.11 oz.
    • Hearing Aid Compatible (HAC)
    • M3/T3 Rating
    • Battery Capacity
    • 3,000 mAh (Non-Removable)
    • Talk Time
    • Up to 12 hours*
    • Standby Time
    • Up to 10 days and 12 hours*
    • Internal Memory
    • RAM
    • 2 GB
    • MicroSD™ Memory Card Support
    • Up to 2 TB**
    • *
    • Actual battery time may vary depending on network connectivity and application use.
    • **
    • Memory cards sold separately.
    • ***
    • Usable memory varies depending on software versions and settings.


    • UPC
    • 652810833103

What people are saying

Rated 1 out of 5 by from Complete garbage, don't waste your money This phone is slow, it freezes constantly, the apps suck, the sound quality is horrible, "settings" functionality is a joke. One very frustrating thing is the call settings does not include an option to stop the screen from going black (which happens in just a few seconds), so when trying to respond to prompts (push 1 for...) the screen goes black and you have to unlock it ot keep tapping hte screen to keep it live. The camera SUCKS! In all, the list of deficentcies of this phone is mountanious. If this phone was free it would be too expensive. I've had other unlocked phones and the K40 is far and away the absolute worst of them all. Any good reviews this phone has received must be from people who were paid to do so.
Date published: 2022-04-12
Rated 4 out of 5 by from Good phone I am happy with the phone. Lg is one of my favorite brands.
Date published: 2021-03-11
Rated 5 out of 5 by from Awesome LG I bought this phone like 4 years ago & its still in great condition. Great job LG K40 manufacturer. I even gave it a name "Look Good" ') . Thank you T-mobile Family!!
Date published: 2021-02-09
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Ask your questions. Share your answers.
Please review the detailed product information and help guides in the
Product Support section for this product prior to posting a question.

How can I change the settings for the Camera? I can not get good night shots or outdoor light shots. Takes Great indoor pictures.

Asked by: WolfLady61
You can select a camera mode that suits your environment to take a photo or record a video easily and conveniently. Tap O then the camera icon, Tap MODE then select the desired mode. Please see the support page at to access the Owner's manual. If you need further assistance, please reach out to our support team on Twitter via @LGUSSupport or on Facebook at ^Daphane ^Daphane
Answered by: LG Electronics
Date published: 2020-12-12

My lgk40 x420mmpl has preinstalled package sdk apk and screen is being recorded and my information to all my accounts is being changed and deleted. I also lost access to my bank accounts due to this is there a way to fix this problem ?

Asked by: Jackie27tightdp3a
Factory reset your phone so malware is erased. If that doesn't work get a new phone and be glad you didn't pay a lot for the one you have to throw away.
Answered by: 2cents
Date published: 2020-04-28

The memory is TINY on these phones, but says you can add a memory card up to 2 TB. Can you use this additional storage for apps, music, photos etc seamlessly, or everytime you download an app or take pics, to you have to specify to use the add'l storage?

Asked by: need for app using kids
A microSD card can be used for storing photos, videos, music and other data. It cannot be used for applications.
Answered by: ChrisPSM
Date published: 2020-10-31

Does th LG K40 have bluetooth low energy capabilities?

Asked by: seemelater68
The LG K40 does feature bluetooth capability.
Answered by: ChrisPSM
Date published: 2020-04-28

Does the lg k40 have wireless charging. ?

Asked by: Blood dragon420
No, the LG K40 is unable to charge wirelessly.
Answered by: ChrisPSM
Date published: 2020-04-28

Does this phone work with straight talk

Asked by: Poohbearlover1
This unit is listed as compatible with the following models: Verizon, AT&T, T-Mobile, Metro by T-Mobile. For all other carriers, please check with your preferred carrier to ensure compatibility.
Answered by: ChrisPSM
Date published: 2021-05-31

Do you know if the phos has a fingerprint sensors inside the lg k40 unlocked gsm??

Asked by: Thom1967
There is a fingerprint sensor on the back of the K40 below the camera. ^CP
Answered by: ChrisPSM
Date published: 2019-12-01

Is the lgk40 water ressitant

Asked by: Ilikeurmomloly9
No, the LG K40 is not water resistant.
Answered by: ChrisPSM
Date published: 2020-04-28
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