delete data/cache for all browsers.uninstall games or other apps that
was installed recently.go to running services under developer options
which you can activate by tapping build no. 10 times.check for running
apps to identify unusual apps that give...
one of the apps installed is giving you this issue if I'm not wrong.so
check for it.to confirm you may turn on your phone in safe mode.On a
different note clear data/cache for Browser's. Samsung Internet/Chrome.