There was an app called Cool Browser which always showed up as an advertisment so, I installed it because it was always showing up. I did not want to use the app, so I tried to uninstall it it but I failed (it blocked me from tapping the OK button).
How do I uninstall it?
it blocked me from tapping the OK button
-- What do you mean by it blocked you? Are you unable to use or see the option 'Uninstall' in Android 'Settings -> Apps' or something else not mentioned here? Besides, have you tried booting into Safe Mode and then uninstall it? – Firelord Apr 04 '15 at 21:27