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Device help
Get step-by-step help and info for your device.
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Access files downloaded from a web browser, email, and messages.
Access the web, access or edit bookmarks, access tabs, and access browser settings.
Download apps, games, movies, music, books, magazines, newspapers and more.
Discover how to use Google to back up contacts, photos, and files.
Learn how you can use Find My Device to manage your device in a secure way by tracking and controlling your device remotely.
Insert or Remove SIM & Memory Card
Get instructions about how to install or remove a SIM or memory card in your device.
Learn how to perform a soft, factory, or alternate master reset of your device.
Use AT&T Personal Cloud to back up and sync your contacts, photos, videos, and more from your device to the cloud.
Learn how to check available device storage, free up memory, remove unused apps, or clear app data.
Back up & Restore with a Computer
Learn how to back up and restore your device using a computer.
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.
Discover how to use Google to back up contacts, photos, and files.
Fix backup, sync, restore or transfer issues
Start a flow to troubleshoot backup, sync, restore or transfer issues.
Learn how to transfer your data and apps from your old device to your new one.
Learn how to turn Airplane Mode on and off using the Notification bar or through Settings.
Tips and tricks to extend your battery performance.
Change the display brightness, time out and orientation.
AT&T ActiveArmor Mobile Security
Use AT&T ActiveArmor to automatically block fraudulent calls, warn about phone spam, and temporarily block unwanted calls.
Block or unblock calls from your device. Block unknown calls.
Get familiar with in-call options, including muting and speakerphone, as well as advanced call features, such as creating a conference call.
Manage call forwarding from your device.
Learn how to add, view, delete, customize by adding a picture or ringtone, and backup your contacts.
Fix call forwarding or caller id issues
Start a flow to troubleshoot call forwarding or caller ID issues.
Start a flow to troubleshoot phone call issues.
Make & Receive an AT&T Video Call
AT&T Video Call lets you make and receive HD Voice calls combined with real-time video.
Learn how to transfer your data and apps from your old device to your new one.
Use your Wi-Fi connection to talk and text when cellular coverage is limited or unavailable.
Learn how to turn Airplane Mode on and off using the Notification bar or through Settings.
Learn how to turn Bluetooth on or off, scan and connect to other Bluetooth devices, and unpair a connected device.
Start a flow to troubleshoot Bluetooth issues.
Start a flow to troubleshoot hotspots issues.
Start a flow to troubleshoot internet issues.
Start a flow to troubleshoot Wi-Fi issues.
Learn how to set up your device as a personal hotspot and share your data connection with Wi-Fi-capable devices.
Learn how to use Samsung SmartThings to connect to and control a wide range of devices.
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.
Determine your device's SIM card type, operating frequencies, physical characteristics, storage, and more.
Learn How to Clean Your Device
Get tips on the best way to keep your device clean.
Set up your device for the first time or after a factory reset.
Find IMEI, Phone & Serial Number
Learn how to locate your device's IMEI, serial number, and phone number.
How to use air gestures and motions, and access additional motions and gestures.
Add your Google account to sync Gmail, Chrome, YouTube, Google Maps, and More.
Insert or Remove SIM & Memory Card
Get instructions about how to install or remove a SIM or memory card in your device.
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.
Change your AT&T Prepaid plan, check your balance, add money to your account and more.
Block messages from your device.
Learn how to add, view, delete, customize by adding a picture or ringtone, and backup your contacts.
Manage email settings such as sync frequency, server settings, signature, removing an email account, and more.
Start a flow to troubleshoot email issues.
Start a flow to troubleshoot messaging issues.
Manage messaging settings such as notification alerts, Advanced Messaging, message limits, restore default settings, and emergency/AMBER alert settings.
Add and download email attachments, respond to an email and more.
Create and respond to text (SMS), Advanced Messaging, or picture (MMS) messages, add, save, and view received attachments and more.
Learn how to add your email accounts so you can read and send email on your device.
How to use air gestures and motions, and access additional motions and gestures.
Discover how to project photos, videos, and media on your device to a TV, tablet, computer, or other device.
Learn how to use two applications at the same time using the split-screen functionality.
Bixby Vision gives you a deeper understanding of what you're looking at through your camera by identifying landmarks, translating languages, or showing you where to buy an item.
Accessibility features improve the usability of your device for users with impaired vision or hearing, cognitive difficulty, or reduced dexterity.
Find IMEI, Phone & Serial Number
Learn how to locate your device's IMEI, serial number, and phone number.
Insert or Remove SIM & Memory Card
Get instructions about how to install or remove a SIM or memory card in your device.
Determine your device's SIM card type, operating frequencies, physical characteristics, storage, and more.
Change your AT&T Prepaid plan, check your balance, add money to your account and more.
Learn how to set up your device as a personal hotspot and share your data connection with Wi-Fi-capable devices.
Learn how to add your email accounts so you can read and send email on your device.
Set up voicemail.
Use your Wi-Fi connection to talk and text when cellular coverage is limited or unavailable.
Use AT&T Personal Cloud to back up and sync your contacts, photos, videos, and more from your device to the cloud.
Discover how to use Google to back up contacts, photos, and files.
Learn how to transfer your data and apps from your old device to your new one.
Change the display brightness, time out and orientation.
Learn & Customize the Home Screen
Make changes to apps, widgets, folders, wallpapers, home screen panels, screen grid, and home touch buttons.
Learn how to access and adjust notification settings, turn notifications on or off, and more.
Learn how to secure your device.
Change volume settings, ringtones, notification alerts and do not disturb.
View and pay your AT&T bills online, manage your account, reset passwords, or upgrade your AT&T services.
Learn about how to use Samsung Free to quickly set reminders, search the internet, and more.
Discover how to project photos, videos, and media on your device to a TV, tablet, computer, or other device.
Learn how to use two applications at the same time using the split-screen functionality.
Bixby Vision gives you a deeper understanding of what you're looking at through your camera by identifying landmarks, translating languages, or showing you where to buy an item.
Access the web, access or edit bookmarks, access tabs, and access browser settings.
Access the calendar on your device and learn how to manage events.
Learn how to switch between Easy Mode (changes your home screen to a simpler experience for first-time smartphone users) and Standard mode.
Learn how Google Assistant allows you to control your device and access voice control settings using voice commands.
Use Google Wallet to make purchases from your device.
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.
Use AT&T Personal Cloud to back up and sync your contacts, photos, videos, and more from your device to the cloud.
Manage camera and video settings including flash, timer, and more.
Start a flow to troubleshoot audio issues.
Start a flow to troubleshoot camera issues.
Learn how to transfer your data and apps from your old device to your new one.
Learn how to take a picture, switch between front and rear camera, focus, and zoom.
Learn how to take a screenshot and immediately share or edit your screenshot.
Learn how to record a video, capture images during video recording, and more.
Learn how to transfer photos and videos to or from your device and a computer.
Free apps typically get revenue through ads, pop-ups, or notifications. Learn how to manage these on your device.
Learn how you can use Find My Device to manage your device in a secure way by tracking and controlling your device remotely.
Learn about the AT&T Secure Family app
Do your children have smart devices? Use Secure Family to locate their devices, manage their internet use, block apps or websites, and more.
Learn how to secure your personal content and keep it hidden on your device.
Learn how to secure your device.
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.
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.
Learn how to switch between Easy Mode (changes your home screen to a simpler experience for first-time smartphone users) and Standard mode.
Learn how to access and adjust notification settings, turn notifications on or off, and more.
Change volume settings, ringtones, notification alerts and do not disturb.
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.
Start a flow to troubleshoot software update issues.
Learn how to perform a soft, factory, or alternate master reset of your device.
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 for the Samsung Galaxy A51 (SM-A515U)
Learn how to update the software of the Samsung Galaxy A51 (SM-A515U).
Determine your current device software version and check for updates.
Access Usage Manager to view data usage, set data limits, and see the apps using the most data.
Free apps typically get revenue through ads, pop-ups, or notifications. Learn how to manage these on your device.
Learn how to troubleshoot apps by clearing the app cache, force stopping an app, checking for updates, removing an app, and reinstalling.
Start a flow to troubleshoot contacts or photos issues.
Start a flow to troubleshoot internet issues.
Start a flow to troubleshoot messaging issues.
Start a flow to troubleshoot phone call issues.
Start a flow to troubleshoot power and battery issues.
Start a flow to troubleshoot screen issues.
Start a flow to troubleshoot SIM card issues.
Start a flow to troubleshoot voicemail issues.
Learn how to perform a soft, factory, or alternate master reset of your device.
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 voicemail messages, and view voicemail options.
Change or Reset Voicemail Password
Reset a forgotten password or change an existing voicemail password.
Start a flow to troubleshoot voicemail issues.
Set up voicemail.