• 5.7" HD+ FullVision Display
  • 13MP 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™ | Spectrum Mobile


    • Screen Size
    • Screen Resolution
    • 1440 x 720 pixels
    • Battery Capacity
    • 3,000 mAh Non-Removable
    • Rear Camera Resolution
    • 13 MP
    • Front Camera Resolution
    • 5 MP
    • Processor
    • 1.8 GHz Octa-Core Qualcomm Snapdragon™ SDM450
    • Memory
    • 2 GB RAM
    • Storage
    • 32 GB ROM (up to 20 GB usable)
    • Carrier
    • Spectrum Mobile


    • Display
    • 5.7" HD+, 1440 x 720 pixels
    • Platform
    • Android™ 8.1 (Oreo)
    • Processor
    • Qualcomm Snapdragon™ SDM450 1.8 GHz Octa-Core
    • Technology
    • Frequencies
    • CDMA 1.9 GHz/800 MHz; GSM 850/900/1800/1900 MHz; LTE Bands 2/4/5/13
    • 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
    • 3,000mAh
    • Talk Time
    • Up to 12 hours*
    • Standby Time
    • Up to 19 days and 12 hours*
    • Internal Memory
    • 32 GB (20 GB usable)
    • RAM
    • 2 GB
    • MicroSD™ Memory Card Support
    • Support up to 2 TB**
    • *
    • Actual battery time may vary depending on network connectivity and application use
    • **
    • Memory cards sold separately


    • UPC
    • 652810832632

What people are saying

Rated 1 out of 5 by from Unbearably Slow Me and another family member got this at the same time. It started out fine but within about 2 months both became unbearably slow. Apps lag, opening and closing things takes for ever. It freezes up constantly. I sometimes miss calls because the phone app locks up and doesn't registered my button inputs. I'm pretty tech savy and have done everything I can to speed this thing up but to no avail.
Date published: 2021-06-10
Rated 1 out of 5 by from Worse Experience I'm still trying to get my information from this phone to my new phone which is L G
Date published: 2021-03-25
Rated 3 out of 5 by from Looks new Crystal clear screen fixed some of the issues, but still runs slow the K40 is just an okay phone. K-30 3ran much better. While on the phone I could barely hear people but I do appreciate them making an attempt I'm fixing my issues
Date published: 2021-03-19
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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.

I have requested written instructions more than once. The phone ( understanding that it is discontinued ) is complicated for me and I need help. You were anxious to sell it to me with no back up knowing it was to be discontinued. Bad PR.

Asked by: Bev2b
You can access the full Owner's Manual on the support page for this phone at ^Daphane
Answered by: LG Electronics
Date published: 2020-12-17

Where to buy screen saver and cover for K-40

Asked by: Bevht
Try a shopping mall. Most of them have vendors set up in the walkways that sell phone accessories.
Answered by: Pat58
Date published: 2020-08-14

Can you take Spectrum mobile off the longer my provider, and use with Verizon?

Asked by: Busymomteach81
Spectrum Mobile doesn't actually own its own cellular network. Instead, it uses Verizon Wireless's cell phone towers to power its mobile service so the LG K40™ | Spectrum Mobile, Model # LMX420QM6 will work with Verizon. Your phone has always been using Verizon's towers....^IFV
Answered by: Ivanf
Date published: 2020-08-06

why do i have to re enter 10 digit number every time i make a call?

Asked by: jackdoug
This is a carrier supported feature. Please check with your carrier regarding this.
Answered by: ChrisPSM
Date published: 2020-03-02

I've only had my phone for a couple months.. I put it in my purse took it out and the screen was cracked. I didn't drop it or anything like that. But I need to order a replacement screen what do I order?

Asked by: Pammy2
LG strives to create devices that will withstand the rigors of daily life. That being said, it is next to impossible to develop a device that will perform in every scenario. Please feel free to give us a call at 1-800-793-8896 or drop us a line at Twitter at @LGUSSupport or on Facebook at @LGUSSupport so we can see what we can do.
Answered by: ChrisPSM
Date published: 2020-02-21

I cannot find casting on my wife's k40. Has this feature been removed in the k40?

Asked by: merodach
@ChrisPSM - that's not the issue. The issue is we can not find the option to cast on the phone itself.
Answered by: merodach
Date published: 2020-01-11

how do I answer the phone, it will not let me pick up the call

Asked by: moo sun
We hate to hear that, but would love to be able to help. We would be happy to see what's going on. Drop us a line on Twitter at @LGUSSupport or on Facebook so we can get more info and see what we can do. ^CP
Answered by: ChrisPSM
Date published: 2020-01-02

How do I keep the light from dimming when I am on a phone call

Asked by: Lisahegg
We would be happy to help you change this setting. For assistance, you can contact our Customer Support by any of the below options: Phone: 1-800-243-0000 LiveChat: Email: Facebook Messenger: Twitter: @LGUSSupport The LG Community Forum is also a great resource for getting help from other LG customers: ^CP
Answered by: ChrisPSM
Date published: 2019-12-23
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