Hi all, I'm looking for some advice from some of you. I do not have an iPhone but generally know my way around iOS. I'm an AV engineer and we've deployed a system were public users use an app to connect with a WiFi based system. First of all, it seems to me that iOS devices HATE connecting to WiFi networks that do not have Internet access. Several users have phones that keep reverting to a public WiFi signal that has Internet, even though it is a weaker signal. Is there a way to disable this? The network they have to connect to for this service does not have Internet, can't have Internet, and never will have Internet. I know you can tell a device to "forget network", but is that it? Can someone recommend a free (and hopefully ad-free), simple, and clean app that can kill background processes or open apps so that an iPhone's memory is as clear as possible before starting the app we're using? On Android, Clean Master is a great one. Also, what iPhone models have FM tuners built in? Do you need a 3rd party app or is there one in iOS? Thanks all.