Enabling iMessage on Mobile-X
Written by Mira Beltre
Updated at March 18th, 2026
Table of Contents
Scope
Intended Audience: All Users
This article outlines how to configure your unlocked iOS or Android device with Mobile-X.
Requirements
- Mobile-X provisioned SIM or QR Code for eSIM (You should have received this from your provider)
- Unlocked iPhone XR or newer, using iOS 15.4 or higher
Prerequisites
Before turning on iMessage, in Settings > Messages, ensure the following is completed.
Enter the Extend Number in Device Settings
- Go to Settings > Cellular > select the SIM > My Number
- Enter the Number provisioned with your Extend SIM
Verify the Extend Number in iCloud
- Go to iCloud > iPhone > Device Info
- There should be a place for the Extend SIM listed
Note
- iMessage activations are controlled entirely by Apple.
- It's very important for Apple Activation requests (iMessage, FaceTime, iCloud, etc.) to have your phone number properly associated with your device.
- Number Format: When entering your number, use the +E.164 format
Enable iMessage on iPhone
- Go to Settings > Messages
- Turn ON iMessage
The service should then activate using your Extend number