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Last active February 7, 2023 17:50
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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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This works and this is awesome! thank you.

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Veria70 commented Feb 16, 2017

Can i use sms manager to receive massages?

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Dibbie commented Jul 17, 2017

Oh wow, after I figured out how to implement this, it worked amazingly! My friend is probably annoyed with all the "test" messages, but it works, so I dont care : P - awesome work on putting all this together in a simple and easy-to-implement way!

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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"

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I am trying to implement automatic OTP reader in UNITY for android . Received OPT should be read automatically without viewing it.

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Very good, it worked like a charm. now please, please I need to be able to read incomming sms in Unity for my android app. It is so that partially sighted people get the text reading as I have implimented it with TTS, STT, calling contact and with this sending SMS. I just need to be able to read out the sms now. This needs to be achivable in Unity.

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

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aygin commented Jul 12, 2018

I have the same error as VicToMeyeZR.

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aygin commented Jul 12, 2018

I found it!

  1. you should use the directory in line 2 for AndroidManifest.xml
  2. change line 6 (package information) of AndroidManifest file according to your package

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Doesn't work for me, can you give me a example? y put the number, and send() at boton fuction, but nothing happend.

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Ahere commented Oct 17, 2019

Hi. Thanks for making this, I keep getting one error though. My game always exits after the message is sent. Could there be something I am doing wrong?

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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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