why my phone can't screenshot and download

[AC Question]

My phone can't screenshot it always said stotage may be in use and can't download picture and audio from whatsapp. Sometime it can't download some apps please help me

Phone: VC smartphone
Model:cactus

 

[belodion]

http://www.vcmalaysia.my/products.php?action=details&proid=5

If this is the phone, it has only 4gb of memory, so that may be the explanation. Take a look in Settings, Storage, and see how much is free. Anything under Cached Data can be safely deleted, which will make a bit of space. But a 4gb device may simply be too restrictive for you.