i am using Latest Microsoft Lumia 640 XL for last 2 months . I am unable to download in UC after Display Lock. Why?
You can choose option "Background Download" when options comes when a list appears and you press download in UC Browser. In case of choosing "Regular Download" this problem occurs. Hope you got your answer!
You may try UC Browser PC version.
its downloading function is more stable than phone.
also it can download Facebook videos.
here's the link to the official website: http://pc.ucweb.com/?from=ghx0005