I installed this app on my i4 last night and it works perfect on my phone. Then I downloaded it on my wifes i4 and it only halfway works. If she's in an app see can quick reply to a text without closing out the app but the volume press action doesn't work. I looked in the activator settings but couldn't find anything. I tried to reinstall the app that didn't fix it either. Can anyone help? Thanks. Oh and by the way I paid for the app it's not cracked.