Deals
iPhone deals
Samsung Galaxy deals
Gift Ideas
Business employee
AARP
Military
First responders
Nurses & physicians
Teachers
Union
Credit card
Explore wireless
Plans & prices
Phones & devices
Upgrade
Bring your own
Add a Line
Switch and save
Trade in your device
International options
Shop new iPhones
iPhone 16
Samsung Galaxy S25
Why AT&T Wireless
Wireless help
More resources
Explore Internet
Plans & prices
Fiber
All-Fi (Wi-Fi)
Check availability
AT&T Internet Air
Moving services
Bundles
Gaming
Home business
Internet help
Internet Speed Test
More resources
Access from AT&T
Explore DIRECTV
TV bundles
DIRECTV help
U-verse help
Explore AT&T PREPAID
Prepaid plans
Phones
Bring your own phone
Prepaid deals
Prepaid account
Activate your service
Lease-to-Own
Home Phone Services
AT&T Phone
AT&T Phone – Advanced
Landline Phone
Lifeline
Phones & accessories
Digital phone help
Landline phone help
Bundles
Internet + DIRECTV
Internet + Wireless
Internet + Phone
Home office
Smart watches & devices
Smart home
In-car Wi-Fi
All accessories
Headphones
Cases
Chargers
Screen protectors
Speakers & smart home
Internet & TV equipment
PopSockets & more
Gadgets & gaming
Accessory deals

Device help

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

Sonim XP3 (XP3800)

Browse the Web

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

Backup & Restore with Computer

Backup and restore your device with a computer.

Backup & Restore with a Memory Card

Backup contacts, photos, and files to increase device memory or transfer to another device.

Optimize Battery Life

Manage battery consumption and view power-saving options.

Block or Unblock Calls

Block or unblock calls from your device.

Call Features

Learn what features are available while on an active call.

Call Forwarding

Manage call forwarding from your device.

Contacts

Add, view, delete, and customize contacts by adding a picture or ringtone.

Enhanced Push-to-Talk

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

Airplane Mode

Turn Airplane mode on and off. 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.

Bluetooth

Turn Bluetooth on or off, scan and 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 international roaming or your mobile data connection on or off.

Wi-Fi

How to connect to 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.

Gestures & Motion

Control your device by making specific movements with your hand.

Keyboard & Typing

Type, change T9 settings, and use Auto-complete.

Learn & Customize the Home Screen

Change the wallpaper and edit home screen shortcuts.

Phone Assembly

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

Block or Unblock Messages

Block messages from your device.

Messaging Settings

Change text (SMS), picture (MMS), Advanced Messaging, wireless emergency (WEA), and AMBER alert settings.

Send & Receive Messages

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

Calendar

Access the calendar and manage events.

Access, Store Photos & Videos

Learn how to access and store Photos & Videos.

Camera & Video Settings

Manage camera and video settings including flash, timer, voice control, recording mode, storage location, and more.

Take a Picture or Video

Take and edit a picture or video, use the front and rear camera, and switch between camera and video modes.

Take a Screenshot

Take a screenshot.

Transfer Photos & Videos

Transfer photos and videos to or from your device and a computer.

Secure My Device

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

Accessibility

Turn on features such as TalkBack, flash notifications, and more. Accessibility features allow you to improve the usability of your device for users affected by impaired vision or hearing, cognitive difficulty, or reduced dexterity.

Date, Time & Alarm

Set the date and time and use the alarm clock.

Display

Change the display brightness, screen time out, and font size.

Notifications & Alerts

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

Sounds

Change volume settings and ringtones.

Available Memory

Check the available device storage, free up memory, and clear app data.

Find IMEI, Serial Number & Phone Number

View the device IMEI & phone numbers.

Software update for the Sonim XP3 (XP3800)

Learn how to update the software of the Sonim XP3 (XP3800).

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.

Reset Device

Perform a soft, factory, and alternate master reset of the device.

Access Voicemail

Check your voicemail messages.

Change or Reset Voicemail Password

Reset a forgotten password or change an existing voicemail password.

Set Up Voicemail

Learn how to set up voicemail.

Sonim XP3 (XP3800)

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