Xamarin: Phone number verify - xamarin.forms

I am working on a Xamarin Forms project. I want to add a functionality where the user has to provide his phone number only when he/she first open the application.
Then the app has to send a push notification to that mobile number with a verification code. And user has to provide that number in the application.
I am new to Xamarin forms, I have no idea how to do that.

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Xamarin Fingerprint displaying Fingerprint name enrolled on device

Good Day
Im using the fingerprint plugin for Xamarin to authenticate a user whos fingerprint is already enrolled on the device.
I want to know if there is a way to display the fingerprint name after successful authentication.
Or even better , give different access to the application according to the fingerprint
using Plugin.fingerprint from Nuget.
Try to contact owners for plugin
No success

Incoming Chat Pop Notification when app is backgrounded/foregrounded or the phone is locked in Forms

I am currently working on text chat application built with Xamarin Forms, i have a requirement to display a full screen page once a chat is initiated, a whatsapp incoming call notification is an analogy here. I do have push notifications setup, so i do receive a push notification once a chat is initiated but I can't find a way to display a full screen custom page with controls to accepting/rejecting a chat. This page needs to appear in foreground mode/background mode or when the phone is locked. Any lead would be helpful. At the moment I am really keen to solve this for android.
Thanks in advance.

Sending an individual push notification to a specific user of webview Android application

Is it possible to send an individual push notification to a specific user of webview Android application?
I have a webview based Android application. Android 8 blocks all background processes and my application can not anymore check for messages every 5 minutes and to show push notifications is there are new messages. As I understand almost the only solution is to use firebase to show notifications.
My question is: can I send individual Firebase notifications to webview application users? If yes, how? People who login to my website from Android phones, enter their data in a login form that loads my website. It's not a Android login form. How can I at the same time login to Firebase and how Firebase will know that this user is already logged in if it's only a webwiew application?
A webview is not capable of directly receiving Cloud Message payloads. The only browsers that works with Cloud Messaging are those that support the Push API.
What you can do instead is receive the payload in the native layer of your Android app (using a normal Android integration with a service that receives the payload), then proxy it to your webview as needed, using webview's ability to inject javascript into it (while it's visible). This definitely is not a trivial amount of work.

Alert notification in android group chat app

I am building an android group chat application which is using Firebase real time database and, i want to add an alert notification in it, so that when any user that installs the app would be able to receive notification in his or her android phone when ever any other user sends chat messages.
I would be very much glad if any one can help me out on this issue. Thanks in advance.

view push notifications in GCM

Hello Experts,
I am developing an android application for an SAP mobile project. I am using PHP server-side scripting to send push notifications. The notifications are not seen on my GCM account under the project. Is it not possible to view them in GCM account or am I looking at some wrong place ? please help me with this.
Regards.
If you are trying to view GCM stats from the API Console, you won't see anything, since they are not enabled. You must you the developer console.
To view statistics and any error messages for your GCM applications:
- Go to the Developer Console.
- Login with your developer account.
You will see a page that has a list of all of your apps.
- Click on the "statistics" link next to the app for which you want to view GCM
stats. Now you are on the statistics page.
- Go to the drop-down menu and select the GCM metric you want to view.
Note: Stats on the Google API Console are not enabled for GCM. You
must use the Developer Console.
(Source)

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