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Unity - Get HTTP request (UnityWebRequest) doesn't work

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For a mobile app I want to make a call to a webpage, for which I'm using UnityWebRequest (which supports Android according to the Unity docs ( When testing in the editor it works flawlessly, but as soon as I test it on my Android device, nothing seem to happen.

Here's my code:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Networking;

public class API : MonoBehaviour
    public Text displayResultText;

    public void SendRequestClick(){
        Coroutine routine = StartCoroutine(TestNewRoutineGivesException());

    IEnumerator TestNewRoutineGivesException()
        UnityWebRequest www = UnityWebRequest.Get("");
        www.downloadHandler = new DownloadHandlerBuffer();
        yield return www.SendWebRequest();
        while (!www.downloadHandler.isDone)
            yield return new WaitForEndOfFrame();

        if (www.isNetworkError)
            string results = www.downloadHandler.text;
        yield break;

    void DoSomethingWithTheCoroutineResult(string results)
        Debug.Log("Successfully got the result: " + results);
        displayResultText.text = results;

So the Get HTTP request should print to a text field, but it doesn't do as such when testing the app on Android. Anybody that could figure out how to get it to work on Android?

Much appreciated!

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