I have a samsung galaxy model GT-I9300. Recently I haven't been able to upload videos to instagram it comes up with a message saying 'unfortunately instagram has stopped' and it then shuts instagram down. I also have been having a message come up saying 'your internet connection is unstable' when connected to wifi, it happens on three different wifis that I have never previously had a problem with. Ive looked these two problems up on the Internet and there are suggestions of it being connected to the android version/update. I currently have the 4.3 update. This is the first update I've done on my phone. I've had it for a while now and it does seem since doing the update ive experienced these problems. Hope you will be able to help me.