Connecting b4 opening the app didn't change anything for me. What did work for me was turning off silent boot in the 'Silent Boot' app and powering off the phone (not restarting but powering off, not that I would expect that to make a difference but u never know now - I doubt my next phone will be a Samsung, what with all the annoyances they've decided to 'create' "SINCE" I bought my second one as I loved my first one. First one was the non-4G version, now I have the 4G version and I find out long after I buy it that it doesn't support FM radio. Ok. Bit of an oversight on my part but disappointed nonetheless since I generally get good use out of it. But it's the other things, like making a deal with Telstra to only allow users to have the standard Phone, Contacts & Messages shortcuts at the bottom of the home screen when you used to be able to choose any 4 or was it 5 shortcuts you liked PLUS making it 3 times as difficult to move apps around on the home screens, and for what? Not to mention all the freaking beeps and sounds and noises the thing makes despite having turned all the volume levels down, which can only be resolved by either studying the phone's settings options from an overly cryptic angle, rooting your phone or downloading a myriad of apps, each one resolving one problem at a time, more than likely a combination of the three, in order to shut them up. Then this problem right out of the blue. Who would ever expect sound to ever come from the external speaker when either a wired or blutooth set of headphones is connected, both in my case. At one point I considered removing the external speaker and just relying on vibrate for calls & notifications, but it's too good for media. Wouldn't be a total loss though, just to shut the damn thing up. Fed up Samsung!!
I thought I'd root one of my phones for some experience with rooting & root'ed' phones and at first I planned to do it with the I9300. Then I'm wondering if I should do it with the I9305 and just go back to using the one with the cracked screen if I brick it. They've both got cracked screens now actually, albeit minor cracks, since cracks appear on these screens faster than the crack that appears when a plumber bends down to fix your broken sink. Now I realise the truth of the matter...these phones were 'rooted' the moment they came off the assembly line.) then powering on again.
But I couldn't tell you which one of the two things I did was the one that actually fixed the problem.