Hi everyone, Just purchased my first smart phone, a Galaxy S4 and I have a couple of questions. I am a complete novice at this so excuse me if my questions seem a bit basic. I have a lmited data plan, so I'd like to make sure that all apps that I do not need running are turned off to save data usage and battery life. I haven't been able to find this. Can someome tell me how to do this? Also is there a quick way to turn the phone to vibrate? I need to keep the phone on vibrate at work and haven't found that option either. Right now I am feelng completely lost so I think I'll go peruse the boards for more information, but if anybody can help me out with these basic questions, I'd appreciate it! Thanks!