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I’ve found the right way to do this: Source code: phone and message are both String. PackageManager packageManager = context.getPackageManager(); Intent i = new Intent(Intent.ACTION_VIEW); try { String url = “https://api.whatsapp.com/send?phone=”+ phone +”&text=” + URLEncoder.encode(message, “UTF-8”); i.setPackage(“com.whatsapp”); i.setData(Uri.parse(url)); if (i.resolveActivity(packageManager) != null) { context.startActivity(i); } } catch (Exception e){ e.printStackTrace(); } Enjoy yourself!