Geeks for your information

A few days before, i saw suddenly my contacts vanished in my android phone. Then i deleted some apps and freed up space and they came back. This was the result of ignoring free up space alerts. 
Just wanted to advise people that high shortage of space can result in such things though there can be other reasons as well for this problem.

Yes, something similar occurs when Windows has not enough space... becomes slow and unstable...