Samsung Galaxy J3 (2018) (J337A)

Device help

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Access downloaded files

Access files downloaded from a web browser, email, and messages.

Browse the Web

Access the web, access or edit bookmarks, access tabs, and access browser settings.

Download apps & games

Download apps, games, movies, music, books, magazines, newspapers and more.


AT&T Mobile Transfer

Move contacts, messages, music, and other data to your new device using AT&T Mobile Transfer.

Backup & restore with computer

Backup and restore your device with a computer.

Backup & restore with Google

Discover how to use Google to back up contacts, photos, and files.

Backup & restore with memory card

Find out how back up contacts, photos, and files with a memory card to increase device memory or transfer to another device.

Samsung Smart Switch Mobile

Transfer your data and apps from your old device to your new one.


Block calls

Block or unblock calls from your device. Block unknown calls.

Call features

Get familiar with in-call options, including muting and speakerphone, as well as advanced call features, such as creating a conference call.

Call forwarding

Manage call forwarding from your device.

Call Protect

Learn how to set up AT&T Call Protect for an HD Voice-capable smartphone on your AT&T wireless account.


Access contacts, create a contact, edit a contact, add a picture or ringtone to a contact, delete a contact, add or remove a contact to speed dial, and back up contacts.

Make & receive an AT&T Video Call

AT&T Video Call lets you make and receive HD Voice calls combined with real-time video.

Wi-Fi Calling

Use your Wi-Fi connection to talk and text when cellular coverage is limited or unavailable.


Airplane mode

Learn how to turn Airplane Mode on and off using the Notification bar or through Settings.


Turn Bluetooth on or off, scan and connect to other Bluetooth devices, and unpair a connected device.

Mobile hotspot

Learn how to set up your device as a personal hotspot and share your data connection with Wi-Fi-capable devices.

Samsung SmartThings

Learn how to use Samsung SmartThings to connect to and control a wide range of devices.

Signal & cellular data

View cellular network signal, turn cellular data connection, international roaming, and mobile data connection on or off.


Turn Wi-Fi on or off, connect to a Wi-Fi network, and remove a Wi-Fi network.


Device setup

Set up your device for the first time or after a factory reset.

Gestures & navigation

How to use air gestures and motions, and access additional motions and gestures.

Google sign-in

Add your Google account to sync Gmail, Chrome, YouTube, Google Maps, and more.

Keyboard & typing

Access keyboard settings, use swipe, auto-complete suggestions, emojis, speech-to-text, and one-handed operation.

Learn & customize the home screen

Make changes to apps, widgets, folders, wallpapers, home screen panels, screen grid, and home touch buttons.

Phone assembly

Install and remove the battery, SIM card, and memory card (microSD).


Determine your device's SIM card type, operating frequencies, physical characteristics, storage, and more.


AT&T Messages Backup & Sync

View text and picture messages, calls, and voicemail messages in a single inbox. Send and receive messages from your tablet or computer.

Block or unblock messages

Block messages from your device.

Email settings

Manage email settings such as sync frequency, server settings, signature, deleting an email account, and more.

Messaging settings

Manage messaging settings such as notification alerts, Advanced Messaging, message limits, restore default settings, and emergency/AMBER alert settings.

Send & receive email

Add and download email attachments, respond to an email and more.

Send & receive messages

Create and respond to text (SMS), Advanced Messaging, or picture (MMS) messages, add, save, and view received attachments and more.

Set up email

Learn how to add your email accounts so you can read and send email on your device.



Access the calendar on your device and learn how to manage events.


Watch, search, and record your favorite movies and shows, and turn your device into your remote control, with the DIRECTV app on your phone.

Google Assistant

Learn how Google Assistant allows you to control your device and access voice control settings using voice commands.

Hello Bixby

Hello Bixby allows you to quickly set reminders, create voice dictation, search and access content on your phone and on the internet.

Multi window

Learn how to use two applications at the same time using the split-screen functionality of Multi Window.


View and pay your AT&T bills online, manage your account, reset passwords, or upgrade your AT&T services.


Access, store photos & videos

Learn how to access and store your photos and videos.

Advanced photo & video features

Learn how to access and use Camera modes, effects, customization, and crop a photo.

Camera & video settings

Manage camera and video settings including flash, timer, and more.

Take a picture

Learn how to access the camera, take a picture, switch between front and rear facing camera, and more.

Take a screenshot

Learn how to take a screenshot and immediately share or edit your screenshot.

Take a video

Record a video, focus the camera, zoom in and out, capture images during video recording, pause and stop a recording, and access videos.

Transfer photos & videos

Transfer files to or from your device and a computer.


Ads, pop-ups & notifications

Free apps typically get revenue through ads, pop-ups, or notifications. Learn how to manage these on your device.

Find My Mobile

Find My Mobile allows you to manage your device in a secure way by tracking and controlling your device remotely.

Reset pattern lock

Reset a forgotten pattern lock.

Secure Folder

Secure your personal content and keep it hidden on your device.

Secure my device

Learn how to lock or unlock your display, set a screen security lock type (intelligent scan, face, iris, fingerprint, pin, password, pattern, or swipe), get your PUK code, or request your device be unlocked from the AT&T network.

Viruses & Malware

Learn how to determine if you might have harmful software (malware) on your device and get tips to help fix the issue.



Accessibility features improve the usability of your device for users with impaired vision or hearing, cognitive difficulty, or reduced dexterity.

Date, time & alarm

Learn how to set the date and time on your device as well as use the alarm clock.


Change the display brightness, time out and orientation.

Easy Mode

Learn how to switch between Easy Mode (changes your home screen to a simpler experience for first-time smartphone users) and Standard mode.

Notifications & alerts

Learn how to access and adjust notification settings and turn notifications on or off.


Change volume settings, ringtones, notification alerts and do not disturb.


Available memory

Learn how to check available device storage, free up memory, remove unused apps, or clear app data.

Find IMEI, phone & serial number

Learn how locate your device's IMEI, serial number, and phone number.

Safe Mode

Android phones have a feature called Safe Mode, which can help you rule out problematic apps as the cause of your device problems.

Software update

Learn how to update the software of the Samsung Galaxy J3 (2018) (J337A).

Software version

Determine your current device software version and check for updates.

View & manage data

Access Usage Manager to view data usage, set data limits, and see the apps using the most data.


Ads, pop-ups & notifications

Free apps typically get revenue through ads, pop-ups, or notifications. Learn how to manage these on your device.

App troubleshooting

Learn how to troubleshoot apps by clearing the app cache, force stopping an app, checking for updates, removing an app, and reinstalling.

Reset device

Learn how to perform a soft, factory, or alternate master reset of your device.

Safe Mode

Android phones have a feature called Safe Mode, which can help you rule out problematic apps as the cause of your device problems.


Access voicemail

Check your voicemail messages.

Change or reset voicemail password

Reset a forgotten password or change an existing voicemail password.

Set up voicemail

Set up voicemail.