Select multitple file with input file

Hello, I have this input for select multiple file… in browser is work select multiple but in smartphone android is not work select multiple

<ion-content padding>
			 <input type="file" id="file-input" multiple (change)="getPictures($event)" >
			 			  <button ion-button (click)="testup(); mulupload.value=''" >test Up</button>

Have you found a solution for this issue that is not using the imagePicker plugin?