SMS Troubleshooting
Try these tips if your SMS is not sending or receiving correctly
If your SMS messages are not sending or receiving correctly, follow the troubleshooting steps below before contacting support.
If you are having trouble with iMessage please check our iMessage trouble Shooting article.
Before troubleshooting myCRMSIM, make sure your SIM card and mobile carrier are working correctly.
- Send an SMS directly from your phone using your default Messages app.
- Reply to the message from another phone.
- Confirm both sending and receiving work successfully.
Important: Do not test through your CRM.
If SMS does not work directly from your phone, contact your mobile carrier before continuing.
- ✅ Keep Alive is enabled.
- ✅ myCRMSIM is set as the Default SMS App.
- Status: Enabled for sending SMS/MMS
On the Home screen, confirm:
- Device ID is displayed.
- Your account email is correct.
- Your device is connected to the correct workspace.
If this information is missing, log out and reconnect the device.
Open the Subaccounts tab.
Each SIM should display:
- Your phone number
- Assigned workspace
- Connected status
If you see:
NOT ASSIGNED
the SIM has not yet been connected from the myCRMSIM Dashboard.
Assign the SIM from your workspace before attempting to send messages.
Step 5: Check Queue Control
Go to:
Settings → Queue Control
If messages are stuck:
- Verify whether Queue Control is Active.
- Check the number of queued messages.
- Review the current delay.
If necessary:
- Tap Pause to temporarily stop sending.
- Tap Clear to remove all queued messages.
Warning: Clearing the queue permanently deletes all queued messages and cannot be undone.
Step 6: Check Delay Between Messages
Still under Settings, review Delay Between Messages.
If a long delay has been configured, messages will remain queued until the delay expires.
Reduce the delay if you require faster message delivery.
Step 7: Check Working Hours
Navigate to:
Settings → Working Hours
If enabled, messages are only sent during the configured time window.
Outside those hours, all outgoing messages remain queued.
If required, disable Working Hours or adjust the schedule.
Step 8: Verify MMS Configuration
Open:
Settings → MMS
Check:
- Correct SIM selected
- Auto-Detected Configuration loaded successfully
- MMSC settings detected correctly
If your carrier requires manual settings, enable Custom Override and enter the required values provided by your mobile carrier.
Keeping the app updated ensures you receive the latest fixes and improvements.
Go to:
Settings → Update App
If an update is available, install it before troubleshooting further.
Step 10: Enable Background Operation
- Open Android Settings.
- Locate myCRMSIM.
- Open Battery.
- Set battery usage to Unrestricted.
Step 11: Reconnect Your HighLevel Integration
Reconnect the Agency
- Open Integrations in the myCRMSIM Dashboard.
- Click Already Connected with Agency.
- Select your Agency.
- Complete the authorization process.
- Open Subaccount Sim page.
- Click Connect Locations.
- Toggle one location Off, then On.
- Confirm the connection.
Open your phone's Messages settings and disable RCS Chat Features, then test SMS again.
Verify:
- The myCRMSIM app is running.
- Keep Alive is enabled.
- Background battery usage is unrestricted.
- The correct workspace is connected.
- Your HighLevel integration is still connected.
- Ensure attachments are under 800 KB.
- Test MMS directly from your phone.
- Check your mobile signal.
- If signal strength is poor, connect to Wi-Fi.
- Enable Wi-Fi Calling if supported by your carrier.
- Update to the latest app version.
- Restart the application.
- If the issue continues, temporarily disable Google Play Services and test again.
- ✅ MMS can be sent successfully.
- ❌ Incoming MMS messages are not yet synchronized into HighLevel conversations.
ResolutionIf you still have the iPhone:
- Insert the SIM into the iPhone.
- Go to Settings → Messages.
- Turn iMessage off.
- Go to Settings → FaceTime.
- Turn FaceTime off.
Restart your Android device and test SMS again.
- Open Integrations.
- Click Next.
- Select only the affected sub-account.
- Continue to Custom Providers.
- Click Proceed.
- Return to Integrations.
- Reconnect your Agency.
- Click Install and Proceed.
- Device model
- App version (found at the bottom of Settings)
- Device ID
- Android version
- Screenshots of any error messages
- A description of the issue, including whether it affects sending, receiving, SMS, or MMS
