How to hangup a cellular phone call that was programmatically initiated in UWP Mobile

Question

How to hangup a cellular phone call that was programmatically initiated in UWP Mobile

Peace Man 1

I initiate a cell phone call using

            phoneCallStore = await PhoneCallManager.RequestStoreAsync();
            LineGuid = await phoneCallStore.GetDefaultLineAsync();
            phoneLine = await PhoneLine.FromIdAsync(LineGuid);
            phoneLine.Dial("1234567890", "Me");

works great, but how do I hang-up this call. I tried setting

LineGuid = System.Guid.Empty;
phoneCallStore = phoneLine = null;

Call continues until i manually hang-up the call.

Please provide me a solution using Visual Studio 2017.

Peace Man 1 Reputation point

2020-08-26T13:15:28.757+00:00

Let me pose a broader question. Is there any way to programmatically make and terminate a phone call?

If one uses PhoneUI/API then can the call/hang button be programmed. I am seeking Paradigms here.
Richard Zhang-MSFT 6,936 Reputation points Microsoft Employee Moderator

2020-08-27T01:42:40.063+00:00

Hello, UWP does not disclose a similar API to hang up the phone from the program for the safety of user operation. If you really need this feature, you can submit a Feature Request in the Windows 10 Feedback Hub app.

1 answer

Your answer

Peace Man 1 Reputation point

2020-08-26T13:15:28.757+00:00

Let me pose a broader question. Is there any way to programmatically make and terminate a phone call?

If one uses PhoneUI/API then can the call/hang button be programmed. I am seeking Paradigms here.
Richard Zhang-MSFT 6,936 Reputation points Microsoft Employee Moderator

2020-08-27T01:42:40.063+00:00

Hello, UWP does not disclose a similar API to hang up the phone from the program for the safety of user operation. If you really need this feature, you can submit a Feature Request in the Windows 10 Feedback Hub app.

Answer 1

Richard Zhang-MSFT 6,936 Microsoft Employee Moderator

Hello,

Welcome to Microsoft Q&A.

A phone line is a line on a device that can either receive incoming calls or place outgoing calls. It does not support to hang up the phone by code. Hanging up is an operation performed by the user and the application cannot interfere.

Thanks.

Peace Man 1 Reputation point

2020-08-26T05:41:17.583+00:00

Well what you are saying is applicable to the entire phone calling process. The fact we can call implies we must be able to hang or abort what we started. Its a fundamental requirement of doing something followed by undoing that thing.
Richard Zhang-MSFT 6,936 Reputation points Microsoft Employee Moderator

2020-08-26T05:50:16.983+00:00

Hello, start and can be terminated, which is suitable for most situations. But phone calls are special. It is a behavior that users actively participate in and should be led by users. Therefore, UWP does not provide the function of hanging up the phone by the program. The application can handle the event of the call status change through PhoneCallManager, but cannot actively intervene.
Peace Man 1 Reputation point

2020-08-31T18:01:17.01+00:00

Is it possible to look at all running processes and kill the PhoneApp process? This has to be done on mobile devices. If so how?
Richard Zhang-MSFT 6,936 Reputation points Microsoft Employee Moderator

2020-09-01T07:08:00.08+00:00

Hello, UWP applications can obtain the process information in the system through App Diagnostics, but the WP system version may not meet the requirements (the relevant API requires the SDK version to be 16299 or higher), so on the phone, you cannot obtain the process information of other applications and terminate.

Share via

How to hangup a cellular phone call that was programmatically initiated in UWP Mobile

1 answer

Your answer