Have downloaded Battery_Upgrade app which appeared on my Galaxy Ace - got suspicious after I had downloaded and Googled it and found it is a known problem which messes up your phone. Although I downloaded it I did not instal it so it is sitting there on the pull-down page waiting to be installed. Can anyone tell me how to get rid of the download before it gets installed? I do not want to click on in case that instals it. TIA.