Originally Posted by khms
As android 4,4 got permission problem with sd card, I rooted my G3 and installed SDFix for it. Is there any method to make whatsapp to download media, like pictures and audio, into the SD card instead of internal storage?
Unfortunately till now whatsapp still looking for this issue. For the time being, you should free a space for whatsapp pics and video. Move your other data to external memory so that you will freed up space for internal memory. Because you can not make the external sd memory to be the default memory in whatsapp.
Read more: How to save whatsapp media on external sd card by default? - Using samsung galaxy note. How can I save my whatsapp media on externl sd card by default?
Source Whatsapp FAQ