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LG Optimus F3 Cell Phone LG720ABB-LG720ABB
  • LG Optimus F3™ Front Thumbnail
  • LG Optimus F3™ Three quarter skew right Thumbnail
  • LG Optimus F3™ Back Thumbnail
  • LG Optimus F3™ Side Thumbnail

LG Optimus F3™

Stay in the game with the LG Optimus F3™. This 4G LTE smartphone lets you update your status, message friends and share screenshots all super-fast. The 1.2 GHz dual-core processor offers the speed you want, the long-lasting battery has the power you need.

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$129.99 Retail Price
$0.00 Promotional Discount
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LG Optimus F3™ Features

Android™ 4.1 (Jelly Bean)

Jelly Bean builds on the most-loved features of Android - easy multitasking, customizable home screens and deep interactivity.

Dual Mode 3G/4G LTE

Switch seamlessly between Sprint's reliable 3G nationwide network, which reaches more than 276 million people, and Sprint's blazing-fast 4G LTE network, reaching 340 million people and counting. Check coverage.

4-inch display with Corning® Gorilla® Glass 2

Experience videos, apps and pictures like never before. Everything's better on the big screen - and this scratch-resistant touchscreen delivers.

5 MP LED camera

Score the perfect shot with features including panorama. Take all the videos and selfies you want with the full HD (1080p) camcorder and front-facing 1.3 MP camera.

1.2 GHz dual-core processor

Get the complete Internet experience in a flash.


Snap a shot of your screen, take notes, doodle and more.

Qslide 2.0™

View multiple screens at the same time and adjust window sizes to switch between apps in a flash.

Long-lasting battery

Enjoy up to 16 hours of talk time thanks to the long-lasting 2,460 mAh Li-ION battery.

HD Voice††

Experience crystal-clear call quality with reduced background noise while calling another HD Voice-enabled phone on the Sprint network.

Mobile ID

Make your phone a reflection of who you are. Choose ID packs featuring apps, ringtones, wallpaper and more.  Learn more

Mobile Hotspot Capable

Turn your phone into a Wi-Fi® hotspot for up to five devices. Learn more.

Environmental Certification

Platinum certified by the UL Environment, this phone contains environmentally preferable materials with a minimal environmental impact. More info.
Show Full Features
  • 3-way calling
  • 3.5mm headset jack
  • 5MP BSI camera
  • Accelerometer
  • Access to Boost Zone
  • Access to Gmail® and Google Talk™
  • Access to Google Play™
  • Audio Recorder
  • Calendar
  • Call waiting
  • Caller ID
  • Multi language settings
  • Full HD (1080p) video
  • Music player
  • Nationwide Sprint® 3G Network and Nationwide Sprint® 4G LTE Network
  • One-click access to Facebook®, Twitter® and more
  • Picture and video sharing
  • Portrait to Landscape auto-rotate
  • QuickMemo™
  • Speakerphone
  • Stereo Bluetooth®
  • TTY mode
  • Vibrate mode
  • Virtual QWERTY keyboard
  • Voicemail
  • Wi-Fi® enabled

LG Optimus F3™ Specs

Size & Weight

  • Height 4.57"
  • Weight 4.0 oz
  • Width 2.44"
  • Screen Size 4" Touchscreen
  • Depth 0.40"


  • Talking Time 16 hrs
  • Battery Type 2460 mAh Li-Ion Battery
  • Removable Yes


  • 1 GB RAM/4 GB ROM
    Portion of memory occupied by existing content


  • 1.2 GHz dual-core processor

Operating System

What's in the box

  • • LG Optimus F3 phone
  • • 2460 mAh Li-Ion Battery
  • • Micro USB Cable with Charger
  • • Getting Started Guide
    Whats included with the LG Optimus F3™

    User Guides & Device Support

    Want to know everything there is to know about this phone? Learn everything, from setting up your email to managing all of your games and applications.

    Device Support >

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    ULE Environment Score:

    Boost Mobile devices are assessed and rated on their sustainability by UL Environment. The score is based on UL 110 - the sustainability standard for mobile phones. We are the only wireless carrier to take all its devices through the independent UL Environment certification process. To be certified, phones must meet a set of prerequisites and then earn points based on additional sustainability criteria. The table below reflects the additional criteria scoring above the prerequisites.

    More info about ULE certification.

    • Materials
    • Energy & Performance
    • Health & Environment
    • End-of-Life Management/Life Extension
    • Packaging
    • Manufacturing & Operations

    Certain features may use more power and cause actual time to vary. Coverage and services not available everywhere. Availability varies. Additional terms and other restrictions apply. Optimus F3 is a trademark of LG Electronics Inc. All other marks are the property of their respective owners.

    ++HD Voice capability requires a call between two Sprint HD Voice-enabled devices in an upgraded area within the Sprint network.