How to delete whatsapp without a SD card or a SIM card installed? I have taken out my SIM card and SD card as I have a new phone, how do I delete whatsapp, as messages are still being received to my old phone?
Uninstall Whatsapp from Google Play or from the phone's Application Manager (In the Samsung Galaxy S4, Settings &gt; More &gt; Application Manager).

If it's a pre-installed app and cannot be uninstalled by regular means, clear its data via Application Manager. In the Application Manager, click Whatsapp and you might see buttons like Clear data and Clear cache.