These are unknown applications downloading self in my phone.
The unknown applications setting is turned off.
I have performed factory reset several times yet they come back after a day or two.
---------- Post added at 02:42 PM ---------- Previous post was at 02:18 PM ----------
Further to my last explanation,the following applications secretly installed themselves in my phone in the last one hour: Toolbox, Touch light, Branch and Opera Mini.
These applications were removed by me earlier to day.