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Device help

Get step-by-step help and info for your device.

Sonim XP3plus (XP3900)

Access Downloaded Files

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

Browse the Web

Access the web, create and use bookmarks and tabs, and access browser settings.

Available Storage

Check available device storage, free up memory, remove unused apps, and clear app data.

Backup & Restore with a Computer

Backup 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.

Airplane Mode

Turn Airplane Mode on and off using the Quick Settings or through Settings.

Display

Change the display brightness, screen time-out, and orientation.

Optimize Battery Life

Tips and tricks to extend your battery performance.

Block or Unblock Calls

Block or unblock calls from your device.

Call Features

Learn how to use in-call options like mute, speakerphone, and creating a conference call.

Call Forwarding

Learn how to use call forwarding.

Contacts

Add, view, delete, customize and backup contacts.

Enhanced Push-to-Talk

Use Enhanced Push-to-Talk (EPTT) to make and receive calls.

Airplane Mode

Turn Airplane Mode on and off using the Quick Settings or through Settings.

Bluetooth

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

Mobile Hotspot

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, international roaming, and mobile data on or off.

Wi-Fi

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

Specifications

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

Device Setup

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

Find IMEI, Phone & Serial Number

Locate your device's IMEI, serial number, and phone number.

Gestures & Navigation

Assign and use programmable shortcuts to quickly access features.

Keypad & Typing

Access keyboard settings like text entry mode, auto-complete suggestions, and emojis.

Learn & Customize the Home Screen

Change the wallpaper and edit home screen shortcuts.

Phone Assembly

Install and remove the SIM, memory card, and battery.

Block or Unblock Messages

Block and unblock messages from your device.

Contacts

Add, view, delete, customize and backup contacts.

Messaging Settings

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

Send & Receive Messages

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

Enhanced Push-to-Talk

Use Enhanced Push-to-Talk (EPTT) to make and receive calls.

Gestures & Navigation

Assign and use programmable shortcuts to quickly access features.

Accessibility

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

Locate your device's IMEI, serial number, and phone number.

Phone Assembly

Install and remove the SIM, memory card, and battery.

Specifications

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

Mobile Hotspot

Set up your device as a personal hotspot and share your data connection with Wi-Fi-capable devices.

Set Up Voicemail

Set up voicemail.

Display

Change the display brightness, screen time-out, and orientation.

Learn & Customize the Home Screen

Change the wallpaper and edit home screen shortcuts.

Notifications & Alerts

Access and adjust notification settings and turn notifications on or off.

Secure My Device

Lock or unlock your display, set a screen security lock, get your PUK code, or request your device be unlocked from the AT&T network.

Sounds

Change volume settings, ringtones, and notification alerts.

Sonim Scout

Learn how to use Sonim Scout to manage your devices.

Browse the Web

Access the web, create and use bookmarks and tabs, and access browser settings.

Calendar

Access the calendar and learn how to create, view, edit, and delete events.

Access, Store Photos & Videos

Access photos and videos and set your storage location.

Camera & Video Settings

Manage camera and video settings including flash, timer, and picture size.

Take a Picture or Video

Take a picture or video, switch between camera and video modes, and more.

Take a Screenshot

Take a screenshot and share or edit it.

Transfer Photos & Videos

Transfer content to or from your device and a computer.

Secure My Device

Lock or unlock your display, set a screen security lock, get your PUK code, or request your device be unlocked from the AT&T network.

Accessibility

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

Date, Time & Alarm

Set the date and time on your device as well as use the alarm clock.

Display

Change the display brightness, screen time-out, and orientation.

Notifications & Alerts

Access and adjust notification settings and turn notifications on or off.

Sounds

Change volume settings, ringtones, and notification alerts.

Available Storage

Check available device storage, free up memory, remove unused apps, and clear app data.

Find IMEI, Phone & Serial Number

Locate your device's IMEI, serial number, and phone number.

Reset Device

Power cycle and restart your device, as well as perform a factory, or alternate master, reset of your device.

Software Version

Determine your current device software version and check for updates.

View & Manage Data

View data usage, set data limits, and view or change billing cycle.

Reset Device

Power cycle and restart your device, as well as perform a factory, or alternate master, reset of your device.

Access Voicemail

Check your voicemail messages.

Change or Reset Voicemail Password

Change an existing voicemail password or reset a forgotten password.

Set Up Voicemail

Set up voicemail.

Having device issues?

Fix common service and device problems.
Get the AT&T ActiveArmor app

Download the free ActiveArmor app to:

  • Help block spam and fraud calls
  • Secure your device and the stuff on it
  • Get notified of data breaches
Get the AT&T Device Help app

Use the device help app to:

  • View customized device tutorials
  • Run device health check
  • Get help with common device issues