3CX WebClient & Mobile App: Sending and Receiving SMS Instructions

Overview

These instructions explain how to send, receive, and manage SMS messages using 3CX on both the WebClient and the Mobile App (Android / iPhone).

Important: All mobile numbers must be in E.164 format (international format)

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Accessing 3CX WebClient

1. Open the 3CX WebClient:

   • https://uc.3cx.us/#/login

2. Log in using:

   • Your Union phone extension (Do not use your union email, you will get an error on login)

   • Your 3CX Password

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3CX WebClient – Sending an SMS

1. In the WebClient, go to the Chat page.

2. Click the Plus (+) icon.

3. Select Send SMS.
   
   

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4. On the New Conversation screen:

   • Enter a contact name or mobile number.

   • The mobile number must be in E.164 format (e.g. +12345678901).

   • If the number is not in the correct format, 3CX will prompt you to correct it.

5. Select the contact or confirm the corrected number.

6. Click Start Chat.
   
   

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7. Type your message in the Say Something text box.

8. Press Enter or click Send.

A tick next to the message confirms the SMS was successfully sent.

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3CX WebClient – Receiving & Replying to SMS

• When a new SMS is received, a pop-up notification appears.

• You can either:

  • Ignore it (the message will appear later in the Chat list), or

  • Click Reply to respond immediately.

SMS Conversation Options

Within an SMS conversation window, you can:

1. Call: Call the sender directly.

2. Transfer: Transfers the SMS conversation to another user (Option is currently bugged, do not use)

3. Dealt With: Marks the SMS as handled and archives it.

4. Archive: Archives the SMS (via More Options).

5. Close: Closes the conversation and returns it to the Chat list.

6. Reply: Type your message in the Say Something box and press Enter
   
   

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3CX Mobile App (Android / iPhone) – Sending an SMS

1. Open the 3CX Mobile App.

2. Tap the Chat icon.

3. Tap the Plus (+) icon.

4. Select SMS.

5. In the Type a name or phone number field:

   • Enter a mobile number in E.164 format (e.g. +12345678901), or

   • Search for a contact by name.

6. If the contact number is not in E.164 format, the app will prompt you to correct it.

7. Once a valid number or contact is selected, the SMS conversation opens.

8. Type your message and tap Send.

A tick indicates the SMS has been successfully sent.

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3CX Mobile App – Receiving & Replying to SMS

• New SMS messages appear as push notifications on your phone.

• You can choose to:

  • Reply, or

  • Mark as Read.

When replying:

1. You are taken to the SMS conversation screen.

2. Type your message in the text box.

3. Tap Send.

SMS Indicators

• A number badge on the Chat icon indicates unread messages.

• Unread SMS conversations are also marked within the Chat list.

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Tips & Best Practices

• Always verify mobile numbers are saved in E.164 format to avoid delivery issues.