400MB free ram but cant delete WhatsApp chats I have a samsung galaxy J3 2016 (SM-J320FN)
I bought it brandnew like 6/7 months ago,

Ive got a tiny 8gb internal storage plus a 32gb sd-card,
Got all my applications and files and stuff moved to my sdcard. 

But i still run out of internal storage almost twice a week.
I don't have mutch applications on it either,

I cant even delete some whatsapp groupchats,
It just keeps loading.

And then it wil freeze and not mutch later crash..
Sometimes he won't even send pictures over WhatsApp.
Or cant update my profile picture cuz then it will just freeze and crash again 

I've tried to reinstall WhatsApp multiple times and it doesn't help,
And the weird thing is i have 400+mb free ram  atm 

So i don't really know what to do anymore anyone suggestions?
I am not responsible for lost data
Try to do this:


Uninstall whatsapp
Search in internal storage the whatsapp folder
Delete it
Reboot your phone
Reinstall whatsapp and DON'T restore backups


If this procedure doesn't work, I think it is a good idea resetting your phone.
Unfortunately devices like your have this type of problems frow the dawn of the times and the only solution often is the total wipe