LG K40™ | Spectrum Mobile

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 downhill The phone started out great!!!!! Then a couple months later it would freeze and restart its self periodically, then from there its started to freeze for hours and seem to over heat. The last straw was nothing would work cause its had low storage even after deleting almost all my apps to it finally just stopped working and just continued trying to restart took it in to the store and had to do a factory reset. Needless to say I do not recommend this phone.
Date published: 2021-02-12
Rated 1 out of 5 by from JUNK This phone started out bad and has only got worse over the year I’ve had it. Constantly freezing, apps just pop up. Nothing good to say about it.
Date published: 2021-02-09
Rated 1 out of 5 by from The Worst Phone I've Ever Had I used it for a few months without problem, then it began to freeze. I called the carrier three times. They gave me useless advice. Then I called LG and they couldn't help and asked me to send it to them. The repair would take two weeks. Then what do I do for a phone for two weeks?
Date published: 2021-01-20
  • y_2021, m_3, d_6, h_16
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.14
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_17
  • loc_en_US, sid_MD07000131, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_lg
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 7ms


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 https://www.lg.com/us/support/product/lg-LMX420QM6.ARCHPL. ^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 device...no 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 https://www.facebook.com/LGUSA/ 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: https://www.lg.com/us/support/chatbot Email: https://www.lg.com/us/support/email-appointment Facebook Messenger: https://www.facebook.com/LGUSA/ Twitter: @LGUSSupport The LG Community Forum is also a great resource for getting help from other LG customers: https://lgcommunity.us.com/ ^CP
Answered by: ChrisPSM
Date published: 2019-12-23
  • y_2021, m_3, d_6, h_16CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.14
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_26
  • loc_en_US, sid_MD07000131, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_lg
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 4ms

Compare (0)