Connecting Issue

[lusky]

I have updated the server from V18 to V20 and all seems to be working well apart from the iOS app which constantly says connecting in the top right hand corner.

If I go to the burger menu in the top left hand side of the app, and then choose Scan QR Code I am getting various error messages such as server returned error code 404 and cannot connect.

I should add that when the update was done, the install was done on a new machine with a different local IP address.

 

[KyriacosS_3CX]

Hello,

Are you trying to provision within the local network over WiFi? Is split DND / hairpin NAT set up correctly?

Best,
KS

 

[lusky]

Hello,

Are you trying to provision within the local network over WiFi? Is split DND / hairpin NAT set up correctly?

Best,
KS

I have tried both internal and external and the app still does not connect.

If I dial the extension number of the iPhone app from a LAN phone, then the iOS 3CX phone app does ring.

 

[SteveITS]

constantly says connecting in the top right hand corner.

We resolved that by deleting and reinstalling the app on that phone:

Post in thread '3CX Apps stuck on "Connecting...", webclient works'

Jul 15, 2025

@workanda Did you resolve this? We ran into what sounds like the same issue with a client, and deleting and reinstalling the mobile app fixed it. I assume it was the account/configuration somehow but figured deleting the app was easier to instruct over the phone, than deleting just the account/extension.

No idea on the cause except the person claims it started this weekend which would be after the upgrade to 20u6 early Saturday morning. That's our only report of that specific symptom though.

• SteveITS

 

[lusky]

We resolved that by deleting and reinstalling the app on that phone:

Post in thread '3CX Apps stuck on "Connecting...", webclient works'

Jul 15, 2025

@workanda Did you resolve this? We ran into what sounds like the same issue with a client, and deleting and reinstalling the mobile app fixed it. I assume it was the account/configuration somehow but figured deleting the app was easier to instruct over the phone, than deleting just the account/extension.

No idea on the cause except the person claims it started this weekend which would be after the upgrade to 20u6 early Saturday morning. That's our only report of that specific symptom though.

• SteveITS

Thanks, I have deleted and now I just get the message no answer from server.

 

[SteveITS]

Can the phone's web browser connect to the 3CX FQDN?

 

[lusky]

Can the phone's web browser connect to the 3CX FQDN?

Thanks for this - it has pointed me to the right direction.

The issue was that there are two internet connections and when the upgrade was done, the connection changed from the original one to the secondary one, hence no connection. Router config has now been updated and all seems fine. Thanks for your assistance.