Hi folks, I'm relatively new to Android and this is my first post here, although I'm always hanging around picking up hints/tips/info. I have a Samsung Galaxy Nexus (GSM) and recently installed Onavo to monitor my data usage as I only have 500mb on my plan. Whilst taking a look at what apps are using most of my data I noticed that, pretty high up the list, there is a system app called "keychain" which has used 9.2MB this month. ringtones samsung: Samsung Ringtones for Android, IOS - Download FREE Can anyone tell me a) what the app is and b) why it's using data? It's not really causing an issue in terms of me nearing my limit, I just have no idea what it's for. Any help is appreciated.