Device help
Get step-by-step help and info for your device.
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Learn how to 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.
Learn how to install and remove the battery, SIM card, and memory card (microSD).
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.
Back up & 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.
Learn how to turn Airplane Mode on and off using the Notification bar or through Settings.
Change the display brightness, time out and orientation.
Tips and tricks to extend your battery performance.
Block or unblock calls from your device.
Learn what features are available for a phone call. Make & receive a call, decline a call, adjust volume, put a call on hold, mute a call, or put a call on speaker phone; access your contacts, dialpad and home screen; return to an active call and end a call.
Manage call forwarding from your device.
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.
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.
Learn how to 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.
Activate New AT&T Prepaid® Service
Learn how to activate an AT&T Prepaid service on your device, online, or over the phone.
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.
Find IMEI, Phone & Serial Number
Learn how to locate your device's IMEI, phone number, and serial number.
How to use air gestures and motions as well as access additional motions and gestures.
Add your Google account to sync Gmail, Chrome, YouTube, Google Maps, and More.
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, and screen grid.
Change your AT&T Prepaid plan, check your balance, add money to your account and more.
Learn how to install and remove the battery, SIM card, and memory card (microSD).
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.
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 as well as access additional motions and gestures.
Learn how to use Split Screen, which allows you to have multiple apps open at the same time.
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, phone number, and serial number.
Learn how to 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.
Activate New AT&T Prepaid® Service
Learn how to activate an AT&T Prepaid service on your device, online, or over the phone.
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.
Back up & Restore with a Computer
Learn how to back up and restore your device using a computer.
Change the display brightness, time out and orientation.
Learn & Customize the Home Screen
Make changes to apps, widgets, folders, wallpapers, home screen panels, and screen grid.
Learn how to access and adjust notification settings, turn notifications on or off, and more.
Lock or unlock your display, set a screen security lock type (pin, password, pattern, or fingerprint), get your PUK code, or request your device be unlocked.
Change volume settings, ringtones, and notification alerts.
View and pay your AT&T bills online, manage your account, reset passwords, or upgrade your AT&T services.
Learn how to use Split Screen, which allows you to have multiple apps open at the same time.
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.
Keep track of how long you view screens and set limits using Digital Wellbeing features.
Learn how Google Assistant allows you to control your device and access voice control settings using voice commands.
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 storage location, flash, picture size, timer, and more.
Learn how to take a picture or video, use the front and rear camera, switch between camera and modes, and more.
Learn how to take and access screenshots.
Transfer files 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.
Lock or unlock your display, set a screen security lock type (pin, password, pattern, or fingerprint), get your PUK code, or request your device be unlocked.
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 access and adjust notification settings, turn notifications on or off, and more.
Change volume settings, ringtones, and notification alerts.
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, phone number, and serial number.
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 TCL 30 Z (4188R)
Learn how to update the software of the TCL 30 Z (4188R).
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.
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.
Check your voicemail messages.
Change or Reset Voicemail Password
Reset a forgotten password or change an existing voicemail password.
Set up voicemail.