Uses 

{$IFDEF ANDROID}
  ,Androidapi.JNI.Os,
  Androidapi.JNI.GraphicsContentViewText,
  Androidapi.Helpers,
  Androidapi.JNIBridge
{$ENDIF}
{$IFDEF IOS}
  ,IOSapi.MediaPlayer,
  IOSapi.CoreGraphics,
  FMX.Platform,
  FMX.Platform.IOS,
  IOSapi.UIKit,
  Macapi.ObjCRuntime,
  Macapi.ObjectiveC,
  iOSapi.Cocoatypes,
  Macapi.CoreFoundation,
  iOSapi.Foundation,
  iOSapi.CoreImage,
  iOSapi.QuartzCore,
  iOSapi.CoreData
{$ENDIF}
  ;

{$IFDEF IOS}
Const
  libAudioToolbox        = '/System/Library/Frameworks/AudioToolbox.framework/AudioToolbox';
  kSystemSoundID_vibrate = $FFF;

Procedure AudioServicesPlaySystemSound( inSystemSoundID: integer ); Cdecl; External libAudioToolbox Name _PU + 'AudioServicesPlaySystemSound';
{$ENDIF}



//In your Application

procedure TForm1.Button1Click(Sender: TObject);
{$IFDEF ANDROID}
Var
  Vibrator:JVibrator;
{$ENDIF}
begin
{$IFDEF ANDROID}
  Vibrator:=TJVibrator.Wrap((SharedActivityContext.getSystemService(TJContext.Java​Class.VIBRATOR_SERVICE) as ILocalObject).GetObjectID);
  // Vibrate for 500 milliseconds
  Vibrator.vibrate(500);
{$ENDIF}
{$IFDEF IOS}
  AudioServicesPlaySystemSound( kSystemSoundID_vibrate );
{$ENDIF}
end;