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Last active October 29, 2023 20:39
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Sample How to Send SMS in Android using Unity3D and SMS Manager. (without opening SMS Composer)
<?xml version="1.0" encoding="utf-8"?>
<!-- Directory : [Project]/Assets/Plugins/Android/AndroidManifest.xml -->
<!-- Configure according to your android application information. -->
<!-- REQUIRED permission -->
<uses-permission android:name="android.permission.SEND_SMS" />
<!-- Additional -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.SMS_RECEIVED" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<activity android:name="com.unity3d.player.UnityPlayerActivity"
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<meta-data android:name="unityplayer.UnityActivity" android:value="true" />
using UnityEngine;
public class SendSMS : MonoBehaviour
AndroidJavaObject currentActivity;
public void Send(string phone)
if (Application.platform == RuntimePlatform.Android)
void RunAndroidUiThread()
AndroidJavaClass UnityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
currentActivity = UnityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
currentActivity.Call("runOnUiThread", new AndroidJavaRunnable(SendProcess));
void SendProcess()
Debug.Log("Running on UI thread");
AndroidJavaObject context = currentActivity.Call<AndroidJavaObject>("getApplicationContext");
// SMS Information
string phone = "08888888888";
string text = "Hello World. This SMS is sent using Android SMS Manager.";
string alert;
// SMS Manager
AndroidJavaClass SMSManagerClass = new AndroidJavaClass("android.telephony.SmsManager");
AndroidJavaObject SMSManagerObject = SMSManagerClass.CallStatic<AndroidJavaObject>("getDefault");
SMSManagerObject.Call("sendTextMessage", phone, null, text, null, null);
alert = "Message sent successfully.";
catch (System.Exception e)
Debug.Log("Error : " + e.StackTrace.ToString());
alert = "Error has been Occurred. Fail to send message.";
// Show Toast
AndroidJavaClass Toast = new AndroidJavaClass("android.widget.Toast");
AndroidJavaObject javaString = new AndroidJavaObject("java.lang.String", alert);
AndroidJavaObject toast = Toast.CallStatic<AndroidJavaObject>("makeText", context, javaString, Toast.GetStatic<int>("LENGTH_SHORT"));
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Works fine on Unity 2017.4.27f1 (64-bit), but crashed on unity 2019.2.11f1

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Just get an Android error "Error has been Occurred. Fail to send message".

Same here

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help, i do not understand how to implement it, i always have the error "Error has been Occurred. Fail to send message"

Check your xml path

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necesito ayuda con este código, ya que lo ocupo para un proyecto

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Cunibon commented Sep 28, 2020

Hey im trying to implement this code but it wont work, could it be that this is impossible in newer android versions?

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@Cunibon I'm sorry to say that I don't know, android often updating their spec and API on the newer version, especially permission issue.. I haven't touched Unity and Android in the last couple of years, I'll check and let let you know if I have the time

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Cunibon commented Sep 29, 2020

@rmdwirizki that would be great. I've been trying to get an answer on reddit or stackoverflow for months now didnt expect to actually get an answer here 👍

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Don't forget to go to your app in android and give permission to the app to send SMS. It will solve a lot of issues.

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