Android Background Apps Disable. Just as in windows and os x, your android device probably has all manner of apps running in the background. Disable the “installing apps from unknown sources” option. By default enable usage of mobile data in the background in your android device.
From the home screen, tap the app slider, then open “settings“. Also, allow unrestricted data access when data saver in turn on in your phone.
Android gives a two option for this.
From the home screen, tap the app slider, then open “settings“. Virus, malware (apps loading unecessarily eg. Theres a lot of unnecessary stuff to run and eg. Android oreo imposes background execution limits to ensure that apps won't go crazy with background services or keep listener services open at all times.