I wrote this for a project a few years ago. It should work fine, but I no longer maintain it. It shows the status bar in the color of your choice.

Usage:


 #if UNITY_ANDROID && !UNITY_EDITOR
 Screen.fullScreen = false; //Should be unnecessary unless you changed it
 AndroidUtility.ShowStatusBar(Color.black);
 #endif

Code:

 #if UNITY_ANDROID && !UNITY_EDITOR
 using System;
 using UnityEngine;
 
 namespace Evorlor.Common
 {
 public static class AndroidUtility
 {
 private const int MinStatusBarColorApi = 21;
 private const int SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN = 0x00000400;
 
 private static AndroidJavaObject activity;
 
 /// <summary>
 /// Shows the Android Status bar
 /// </summary>
 /// <param name="color">Color of status bar to be used</param>
 public static void ShowStatusBar(Color color)
 {
 int androidColor = ConvertColorToAndroidColor(color);
 RunOnUiThread(() =>
 {
 using (var window = Window)
 {
 window.Call("clearFlags", SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
 if (GetApi() >= MinStatusBarColorApi)
 {
 window.Call("setStatusBarColor", androidColor);
 }
 else
 {
 Debug.LogWarning("Changing the status bar color is not supported on Android API lower than Lollipop.");
 }
 }
 });
 }
 
 private static void RunOnUiThread(Action action)
 {
 Activity.Call("runOnUiThread", new AndroidJavaRunnable(action));
 }
 
 private static AndroidJavaObject Activity
 {
 get
 {
 if (activity == null)
 {
 var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
 activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
 }
 return activity;
 }
 }
 
 private static AndroidJavaObject Window
 {
 get
 {
 return Activity.Call<AndroidJavaObject>("getWindow");
 }
 }
 
 private static int GetApi()
 {
 using (var version = new AndroidJavaClass("android.os.Build$VERSION"))
 {
 return version.GetStatic<int>("SDK_INT");
 }
 }
 
 private static int ConvertColorToAndroidColor(Color color)
 {
 Color32 color32 = color;
 int alpha = color32.a;
 int red = color32.r;
 int green = color32.g;
 int blue = color32.b;
 using (var colorClass = new AndroidJavaClass("android.graphics.Color"))
 {
 int androidColor = colorClass.CallStatic<int>("argb", alpha, red, green, blue);
 return androidColor;
 }
 }
 }
 }
 #endif