Are you one of those iPhone users who are just simply too cool to walk around with the ringtone enabled on the device? I'm pretty sure we have all gone through a phase of leaving our devices permanently on silent in an attempt to escape the consistent ringing that comes from friends, family members and colleagues. And while it may be the best move for our social lives, it certainly does a lot for our sanity. If operating an iPhone in a permanent state of ringer silence is part and parcel of your daily usage cycle, then perhaps the new Calmi jailbreak tweak is worth checking out.