Device help
Get step-by-step help and info for your device.
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Browse the web, use browser tabs and bookmarks, and access browser settings to clear history, manage pop-ups, and more.
Download apps, games, music, movies, and more using Play Store, check for an update, and reinstall an app.
How to view, switch between, and close running applications.
Use AT&T Personal Cloud to back up and sync your contacts, photos, videos, and more from your device to the cloud.
Backup & Restore with Computer
Backup and restore your device with a computer.
Backup & Restore with Memory Card
Backup contacts, photos, and files to increase device memory or transfer to another device.
You can use Android Backup Service to back up data connected to one or more of your Google accounts. If you replace your device or erase its data, you can restore your data using the account(s) that you backed up.
Fix backup, sync, restore or transfer issues
Start a flow to troubleshoot backup, sync, restore or transfer issues.
Tips and tricks to extend your battery performance.
Block or unblock calls from your device. Block unknown calls.
Manage call forwarding from your device.
Learn how to set up AT&T Call Protect for an HD Voice-capable smartphone on your AT&T wireless account.
Add, view, delete, and customize contacts by adding a picture or ringtone.
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.
Place a call, make a conference call, speed dial, answer or decline a call, and reject a call with a text.
Make & Receive an AT&T Video Call
AT&T Video Call lets you make and receive HD Voice calls combined with real-time video.
Use your Wi-Fi connection to talk and text when cellular coverage is limited or unavailable.
Airplane mode will disable all wireless services on the device. Calls, data, and text messages cannot be sent or received. Disable Airplane mode to restore regular device function.
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.
Set up your device as a personal hotspot and share your data connection with Wi-Fi-capable 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 having done a factory reset.
Control your device by making specific movements with your hand.
Registering a Google account allows you to download and purchase content in the Google Play Store, access email through the Gmail application, receive personalized Google Search results, and have your account automatically logged in for all other Google-based services on your device.
Keyboard functions, auto-complete, Swype, copy & paste, one-handed operation, and keyboard settings.
Learn & Customize the Home Screen
Make changes to wallpapers, widgets, themes, home screen panels, folders, screen grid, home touch buttons, and EasyHome.
Install and remove the SIM and battery.
Turn your device on and off.
Block, unblock contacts and messages from your device.
Manage email settings such as server settings, signature, sync frequency, add an account, delete an account, and restore default settings.
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.
Add your email accounts so you can read and send email on your device.
Use AT&T Personal Cloud to back up and sync your contacts, photos, videos, and more from your device to the cloud.
Use Multi Window to have two apps open at the same time.
View and pay your AT&T bills online, manage your account, reset passwords, or upgrade your AT&T services.
Create a memo or note on a blank screen with the ability to choose paper style, pencil size, color, add text, insert reminders, location information, images, videos, audio, and more.
Access the calendar and manage events.
The Capture+ feature allows you to capture screenshots, create memos, edit memos, save memos, change memo background, write or draw on almost every screen, and schedule memos to appear at certain times.
Advanced Photo & Video Features
Learn how to access and use Camera 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, picture size, and voice commands.
Start a flow to troubleshoot audio issues.
Start a flow to troubleshoot camera issues.
Take and edit a picture or video, use the front and rear camera, and switch between camera and video modes.
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.
Android Factory reset protection allows you to prevent non-authorized users from accessing your device if it's been lost, stolen, or reset to factory settings without your permission. Only someone with the associated Google account or screen lock information can use the device.
Reset a forgotten pattern lock.
Lock or unlock your display, set a screen security lock (pin, password, pattern, KnockOn, or fingerprint) or adjust the screen lock time.
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.
Set the date, time, time zone and alarm.
Change the screen orientation, brightness, screen timeout, and turn on Comfort view.
Switch between EasyHome (changes your Home screen to a simpler experience for smartphone users) and Standard mode.
How to access and adjust notification settings, turn notifications on or off, adjust app notifications, adjust notification sounds, and turn badges on or off.
Change volume settings, ringtones, notification alerts and do not disturb.
Check the available device storage and free up space.
Find IMEI, Phone & Serial Number
View the device IMEI, phone and serial number.
Start a flow to troubleshoot software update issues.
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 LG K20 (M255)
Learn how to update the software of the LG K20 (M255).
Determine your current device software version and check for updates.
Access Data Manager to view data usage, see the apps using the most data, and set data limits.
Free apps typically get revenue through ads, pop-ups, or notifications. Learn how to manage these on your device.
Clear an application's cache, stop an application, check for an application update, and remove and reinstall an application.
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.
There are four ways to reset your device if you are experiencing issues: Power cycle, Restart, Factory data reset and Alternate reset.
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.