LG G3 User Manual T-Mobile

The LG G3 for T-Mobile is a high-performance smartphone featuring a 5.5-inch Quad HD IPS display, Qualcomm Snapdragon 801 processor, 13MP OIS+ camera with laser autofocus, 4G LTE connectivity, Android operating system, 3000mAh removable battery, wireless charging capability, and T-Mobile specific features including Wi-Fi Calling and HD Voice. Below are key sections for safety, features, setup, operation, and troubleshooting.

1. Features at a Glance 2. Getting Started 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to Networks 7. Using Camera Features 8. T-Mobile Specific Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 5.5-inch Quad HD display, 13MP rear camera with laser autofocus, 2.1MP front camera, removable battery, microSD slot, T-Mobile 4G LTE connectivity.

Feature	Description
Display	5.5-inch Quad HD IPS (2560 x 1440)
Camera	13MP OIS+ with laser autofocus
Processor	Qualcomm Snapdragon 801 2.5GHz
Memory	2GB RAM, 32GB internal storage
Battery	3000mAh removable with wireless charging
Connectivity	T-Mobile 4G LTE, Wi-Fi, Bluetooth 4.0
Audio	1W speaker with BoostAMP
Operating System	Android with LG UX
T-Mobile Features	Wi-Fi Calling, HD Voice, Mobile Hotspot
Security	Knock Code, Content Lock

Getting Started

Unpack and inspect contents. Charge device before first use.

Insert SIM card: Locate SIM slot, insert T-Mobile SIM card.
Insert microSD card: For additional storage (up to 128GB).
Install battery: Insert 3000mAh battery into compartment.
Charge device: Use included charger and cable.
Power on: Press and hold Power button.

WARNING! Use only approved chargers and accessories. Keep away from water and extreme temperatures.

First-Time Setup

Power on device; follow on-screen setup wizard.

Select language: Choose preferred language (default English).
Connect to T-Mobile network: Automatic detection or manual selection.
Set up Google account: For app downloads and synchronization.
Configure security: Set up Knock Code, pattern, or PIN.
Enable T-Mobile services: Activate Wi-Fi Calling and HD Voice.
Customize settings: Adjust display, sound, and notification preferences.

CAUTION! Keep device charged during initial setup. Ensure stable network connection.

Specifications

Display: 5.5-inch Quad HD IPS LCD (2560 x 1440)
Camera: 13MP rear with OIS+, laser autofocus; 2.1MP front
Processor: Qualcomm Snapdragon 801 2.5GHz quad-core
Memory: 2GB RAM, 32GB storage, microSD expandable to 128GB
Battery: 3000mAh removable with wireless charging
Connectivity: T-Mobile 4G LTE, Wi-Fi 802.11ac, Bluetooth 4.0
Operating System: Android with LG UX interface
Dimensions: 146.3 x 74.6 x 8.9mm
Weight: 149g
Special Features: Knock Code, Gesture Shot, Smart Notice

Controls and Settings

Physical buttons: Power/Lock button (rear), Volume buttons (rear), 3.5mm headphone jack, microUSB port.

On-screen controls: Navigation buttons (Back, Home, Recent Apps), QuickMemo+, Notification panel.

Display: Brightness, wallpaper, font size, Smart Screen. Sound: Volume, ringtones, notification sounds, equalizer. Network: Mobile data, Wi-Fi, Bluetooth, NFC. Security: Screen lock, Knock Code, app permissions. T-Mobile: Wi-Fi Calling settings, Mobile Hotspot, account management.

Connecting to Networks

T-Mobile 4G LTE: Automatic connection with activated SIM. Wi-Fi: Access Settings > Wi-Fi to connect. Bluetooth: Pair with compatible devices.

Ensure mobile data is enabled for T-Mobile network.
Select Wi-Fi network and enter password if required.
Enable Bluetooth and search for available devices.
Use Mobile Hotspot to share internet connection.

Tip: Enable Wi-Fi Calling for better voice quality in areas with poor cellular reception.

Using Camera Features

13MP OIS+ camera with laser autofocus and dual-LED flash.

Launch camera: Use camera app or Gesture Shot (open hand).
Basic shooting: Auto mode for point-and-shoot.
Advanced modes: HDR, Panorama, Dual Camera, Magic Focus.
Video recording: Up to 4K UHD resolution.
Front camera: Selfies and video calls.
Gallery: View, edit, and share photos/videos.

WARNING! Do not point laser autofocus at eyes. Keep camera lens clean.

T-Mobile Specific Features

Wi-Fi Calling: Make calls over Wi-Fi network. HD Voice: Enhanced voice quality. Mobile Hotspot: Share internet connection. T-Mobile TV: Stream live TV and on-demand content.

Care & Maintenance

Use soft, dry cloth for cleaning. Avoid liquids and abrasive materials. Use approved chargers and cables only.

CAUTION! Do not expose to extreme temperatures. Keep away from moisture and dust.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. SAR information available in Settings > About phone > Legal information. Copyright © 2025 LG Electronics; T-Mobile is a registered trademark. For support, visit www.t-mobile.com or contact 1-800-T-MOBILE.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No network signal	SIM/Settings	Check SIM installation; enable mobile data; restart device.
Battery drains quickly	Apps/Settings	Close background apps; reduce screen brightness; check battery usage.
Camera not focusing	Lens/Laser	Clean camera lens; ensure laser autofocus is unobstructed.
Wi-Fi Calling not working	Network/Settings	Enable in settings; ensure strong Wi-Fi signal; update E911 address.
Device overheating	Usage/Environment	Close intensive apps; remove from direct sunlight; allow to cool.

Reset: Settings > Backup & reset > Factory data reset if needed.

Service: 1-800-T-MOBILE; www.t-mobile.com/support