LG K51™ | Boost Mobile

Titan Gray


  • 6.5" HD+ FullVision™, Narrow Notch Display 
  • Easy-to-use Rear Triple Camera System
  • 13MP PDAF Standard Angle Rear Camera
  • 5MP Super Wide 115° Rear Camera
  • 2MP Depth Camera
  • All Day Battery Life^ (4,000 mAh)
LG K51™ | Boost Mobile


    • Screen Resolution
    • 1560 x 720 pixels
    • Battery Capacity
    • 4,000 mAh Non-Removable
    • Rear Camera Resolution
    • 13MP (Standard Angle), 5MP (Wide Angle), 2MP (Depth)
    • Front Camera Resolution
    • 13MP
    • Processor
    • MediaTek Helio P22 2.0GHz Octa-Core
    • Memory
    • 3GB RAM
    • Storage
    • 32GB (up to 16GB usable)*
    • Carrier
    • Boost Mobile
    • *
    • Usable memory can vary depending on software versions and settings. Up to 16GB usable on the LG K51.


    • Platform
    • Android™ 9.0 Pie
    • Processor
    • MediaTek Helio P22 2.0GHz Octa-Core
    • Battery Capacity
    • 4,000 mAh Non-Removable
    • Talk Time
    • Up to 21 hours*
    • Charging
    • USB Type-C™ Port
    • Standby Time
    • up to 24.5 days*
    • RAM
    • 3GB
    • Hearing Aid Compatible
    • Rating M3/T3
    • *
    • Actual battery time may vary depending on network connectivity and application use.
    • UPC
    • 652810834094

What people are saying

Rated 1 out of 5 by from Phone Off My phone shut off. like it won't turn back on but it charges because the charge light comes on. Boost mobile said to contact the company of the phone ie LG to fix the issue. Definitely do NOT recommend this phone or service!!
Date published: 2021-09-11
Rated 1 out of 5 by from LG wing absolutely SUCKS!!$ It freezes it shudders it loses connection battery life is terrible. I wish I could get my money back. LG used to be good years ago now is like a play phone.
Date published: 2021-08-15
Rated 1 out of 5 by from LGK51 I am very sorry that we purchased this phone for myself and my wife. I have read the other reviews, and agree with nearly all of the comments regarding the poor performance of this phone. 1. The buttons do not respond to touch correctly. I am constantly typing incorrect words because of sensitivity issues with the keys. 2. I lose Internet connection daily. 3. The phone freezes often for no apparent reason. 4. It does not receive or send text messages in real time. I always get surprise texts a day or two after they were sent. If I could, I would return this product. I am very unhappy with it especially for not being reliable when on the road when I need directions from google maps (and it does not have an Internet connection which happens all the time). I am not a techy person, but I view this phone as being not particularly helpful, reliable or worth the money. Sorry to be harsh, but I am frustrated to the max with this phone.
Date published: 2021-08-02
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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.

does this phone have wireless charging

Asked by: lijah
The LG K51™ | Boost Mobile, Model # LMK500UM does not support wireless charging...^IFV
Answered by: Ivanf
Date published: 2021-01-21

How do you screen record on this phone?

Asked by: Amber15
As with any other Android phone, press and hold the Power/Lock key and the Volume Down key at the same time for at least two seconds on the LG K51™ | Boost Mobile, Model # LMK500UM3ABMUTN. Screenshots can be viewed from the Screenshots folder in Gallery. When the screen is turned off or locked, you can access Capture+ by pressing the Volume Up key twice. To use this feature, tap O > Settings > Extensions > Shortcuts and turn on Open Capture+...^IFV
Answered by: Ivanf
Date published: 2020-10-05

Is the LG k 51 waterproof?

Asked by: Jeffreyn34
No but it will be resistant to splashes. Example: When your outside in the rain and your phone gets rain drops on it. Hoped this helped! :)
Answered by: 8_Anonymous_8
Date published: 2020-08-20

Bought k51 and slimports 2 cannot get either to work on tv what can i do

Asked by: Joered66
You can't connect it to your tv. Sorry. I'm upset too.
Answered by: Amelia103
Date published: 2020-10-03

How do I turn on Wi-Fi Calling?

Asked by: Trancebam
You will find the instructions for how to turn on Wi-Fi Calling on on page 92 of your owner's manual for the LG K51™ | Boost Mobile, Model # LMK500UM3ABMUTN. As per the instructions, On the settings screen, tap Network & internet > Wi-Fi > ⋮ > Advanced Wi-Fi > Wi-Fi Direct. • Nearby devices that support Wi-Fi Direct automatically appear. Select a device. Connection occurs when the device accepts the connection request. Your battery will drain faster when using Wi-Fi Direct...^IFV
Answered by: Ivanf
Date published: 2020-06-19

Does it have NFC capability didn't see it on the specs

Asked by: A443174
No it doesn't
Answered by: Tam102602
Date published: 2020-07-08

How do I unlock this device

Asked by: Jerry1112

How can i see a video in the 6.5 HD full vision display in which it is advertized? I stream a movie and the screen stays not covering the space where the time, battery, and data info are. How do i expand the screen?

Asked by: Abish
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