My WhatsApp folder (/data/media/0/WhatsApp) and in particular its media folder has grown very much. So I want to move it to my SD card. I have rooted my Samsung Galaxy S4 and created an ext4 partition on my SD card for the Link2SD app. However, when I use Link2SD to link WhatsApp to the ext4 partition, it only moves the WhatsApp app but not its data folder with the media which contains most data.
I have also tried to move the WhatsApp folder in a terminal app and softlink to it. However, then WhatsApp stops working and crashes on start.
Is there a way to move the WhatsApp data to an SD card?