Samsung Galaxy A12 (SM-A125U)

Device help

Find step-by-step help for your device.
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ARTICLES

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.

ARTICLES

Back up & restore with Google

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

Find My Mobile

Learn how you can use Find My Mobile to manage your device in a secure way by tracking and controlling your device remotely.

ARTICLES

AT&T Mobile Transfer

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

AT&T Personal Cloud

Back up and sync your contacts, photos, videos, and more from your device.

Available storage

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

Backup & restore with computer

Learn how to back up and restore your device using 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 to back up contacts, photos, and files with a memory card to increase device memory or transfer to another device.

Samsung Smart Switch Mobile

Learn how to transfer your data and apps from your old device to your new one.

ARTICLES

Airplane Mode

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

Display

Change the display brightness, time out and orientation.

Optimize battery life

Tips and tricks to extend your battery performance.

ARTICLES

AT&T Mobile Transfer

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

Block or unblock 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.

Contacts

Learn how to add, view, delete, customize by adding a picture or ringtone, and backup your 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.

Samsung Smart Switch Mobile

Learn how to transfer your data and apps from your old device to your new one.

Wi-Fi Calling

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

ARTICLES

Airplane Mode

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

Bluetooth

Learn how to 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.

Signal & cellular data

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

Wi-Fi

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

ARTICLES

Activate AT&T PREPAID account

Learn how to activate an AT&T PREPAID account on your device, online, or over the phone.

Cleaning your device

Get tips on the best way to keep your device clean.

Device setup

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

Find IMEI & serial number

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

Gestures & Motion

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.

Insert SIM & memory card

Get instructions about how to install a SIM or memory card for your device.

Keyboard & typing

Access keyboard settings, use swype, 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.

Manage AT&T PREPAID account

Change your AT&T PREPAID plan, check your balance, add money to your account and more.

Specifications

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

ARTICLES

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.

Contacts

Learn how to add, view, delete, customize by adding a picture or ringtone, and backup your contacts.

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 to your device.

ARTICLES

Accessibility

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

Activate AT&T PREPAID account

Learn how to activate an AT&T PREPAID account on your device, online, or over the phone.

AT&T Mobile Transfer

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

AT&T Personal Cloud

Back up and sync your contacts, photos, videos, and more from your device.

Find IMEI, Phone & Serial Number

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

Gestures & Motion

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

Insert SIM & memory card

Get instructions about how to install a SIM or memory card for your device.

Learn & customize the Home Screen

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

Manage AT&T PREPAID account

Change your AT&T PREPAID plan, check your balance, add money to your account and more.

Mobile hotspot

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

Notifications & alerts

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

Samsung Smart Switch Mobile

Learn how to transfer your data and apps from your old device to your new one.

Secure My Device

Learn how to secure your device.

Set up email

Learn how to add your email accounts to your device.

Set up voicemail

Set up voicemail.

Specifications

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

ARTICLES

AT&T Personal Cloud

Back up and sync your contacts, photos, videos, and more from your device.

Split Screen

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

Browse the Web

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

Calendar

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

Digital Wellbeing

Keep track of how long you view screens and set limits using Digital Wellbeing features.

Google Assistant

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

HBO Max

All of HBO together with new hits, classic favorites, plus new Max Originals.

myAT&T

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

ARTICLES

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.

AT&T Mobile Transfer

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

AT&T Personal Cloud

Back up and sync your contacts, photos, videos, and more from your device.

Camera & video settings

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

Samsung Smart Switch Mobile

Learn how to transfer your data and apps from your old device to your new one.

Take a picture

Learn how to take a picture, switch between front and rear camera, focus, and zoom.

Take a screenshot

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

Take a video

Learn how to record a video, capture images during video recording, and more.

Transfer photos & videos

Learn how to transfer photos and videos to or from your device and a computer.

ARTICLES

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

Learn how you can use Find My Mobile to manage your device in a secure way by tracking and controlling your device remotely.

Secure My Device

Learn how to secure your device.

Viruses & Malware

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

ARTICLES

Accessibility

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.

Display

Change the display brightness, time out and orientation.

Notifications & alerts

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

Sounds

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

ARTICLES

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

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.

Software update

Learn how to update the software of the Samsung Galaxy A12 (SM-A125U).

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.

ARTICLES

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.

ARTICLES

Access voicemail

Access voicemail, check voicemail messages, and view voicemail options.

Change or reset voicemail password

Reset a forgotten password or change an existing voicemail password.

Set up voicemail

Set up voicemail.

Having device issues?

Fix common service and device problems.

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