Cannot run application on Samsung A5 2017 on mobile network

[chrperrin]

Hi, since few months, we've got issues on our professional phones Samsung A5 2017 (SM-A520F).

All employees with this phone (it's the standard phone) have the same issue. 

If I'm on Wifi network, everthing works fine,

but in mobile network (2G, 3G, 4G/LTE) application can't open, I can download apps, but after I stay on Opening... screen.

If I run the application first on Wifi, then on mobile network, I got server errors when loading data "An error occured on the server."

I've done all updates : phone and PowerApps application. version 3.18091.14

Android version : 8.0.0

Samsung experience : 9.0

Android security patch level : July 1, 2018

I've also tried to re-install the application, clear cache, ...

Here is my session ID : bcc24b9c-03d6-4970-89ab-ad7b64c206fc

Thank you for your help.

Christophe

[cherie]

@chrperrin, the session provided has a lot of information in it. Could you provide me a session id where you are connected to the mobile network and then attempt to open the app? Wait about 30s on the screen you are stuck on then grab the session id for me.

Is it just the app that you created which you cannot open, or is it all apps?

[chrperrin]

Hi cherie,

thank you for your answer.

The issue occurs on all apps (even demo apps), not only my apps.

For some apps, I can not even download them with mobile network, see below error message with session ID : 

ed82473e-4796-4f00-955a-11304b57a614

Christophe

[TopShelf-MSFT]

adding @cherie in to assist with the new session ID @TopShelf-MSFT

[cherie]

I have actually sent @chrperrin private messages to try and help him with his issue.

Thanks

[chrperrin · Accepted solution]

Hi Cherie,  

thank you for your support !

We've finally found the origin of the issue, and could solve it !

Our mobile network provider has changed the default access point name for our professional mobile phones, so I've tried with the previous APN and it's working fine now. 

Thank you.  

Christophe