Ionic and MSAL Authentication

Question

I have an Ionic app that needs to authenticate in Azure, so I installed MSAL following this tutorial: https://docs.microsoft.com/en-us/graph/tutorials/angular

It works like a charm with "ionic serve" but when I run it in the device, it crashes when I try to sign in Azure. I think it is because the popup window MSAL shows for login is not allowed in Ionic.

So my first attempt was to change the loginPopup() call for a loginRedirect(). So I removed this code:

async signIn(): Promise<void> {
  const result = await this.msalService
    .loginPopup(OAuthSettings)
    .toPromise()
    .catch((reason) => {
      this.alertsService.addError('Login failed',
        JSON.stringify(reason, null, 2));
    });

  if (result) {
    this.msalService.instance.setActiveAccount(result.account);
    this.authenticated = true;
    this.user = await this.getUser();
  }
}

And I added this new one (based on https://github.com/AzureAD/microsoft-authentication-library-for-js/blob/dev/lib/msal-browser/docs/errors.md):

async signIn(): Promise<void> {
  await this.msalService.instance.handleRedirectPromise();

  const accounts = this.msalService.instance.getAllAccounts();
  if (accounts.length === 0) {
    // No user signed in
    this.msalService.instance.loginRedirect();
  }
}

But this way, the user information is not saved, because I have not a "result" to handle or to call to setActiveAccount(result). It did not work even in "ionic serve", so I discarded this approach.

The second approach, after seaching for a posible solution for two days, was to show the popup in a InAppBrowser (https://ionicframework.com/docs/native/in-app-browser), so I changed the code to:

async signIn(): Promise<void> {
  const browser = this.iab.create('https://www.microsoft.com/');
  browser.executeScript({ code: "\
    const result = await this.msalService\
      .loginPopup(OAuthSettings)\
      .toPromise()\
      .catch((reason) => {\
        this.alertsService.addError('Login failed',\
          JSON.stringify(reason, null, 2));\
      });\
    if (result) {\
      this.msalService.instance.setActiveAccount(result.account);\
      this.authenticated = true;\
      this.user = await this.getUser();\
    }"
  }); 
}

But it just open a new window and do nothing more, it does not execute loginPopup(), so I also discard this second approach.

Anyone knows how to avoid the popup problem in Ionic?

Thank you