It is a phone, it makes outgoing calls and receives incoming calls. It integrates with bluetooth devices to help facilitate those as well.
1. That's too bad that someone "above us" has limited our ability to put ringtones on the phone. I am actually relieved that I don't have to hear others' stupid ringtones out in public.
Note, the phone DOES ring when called, supporting that it "is" a phone
2. If your phone ringer is too soft by yourself on the highest setting, chances are there's something wrong with your speaker. If you use a clip, it's probably blocking your speaker slightly. Apple has included a "vibrate with ring" feature considering outdoor noise conditions could exceed cell phone ring volume.
3. There is a reminder that pops up to say you missed a call. Try selling your complaint better stating "no audible repeating alert" for missing calls. But if you can't hear your phone anyway, what does it matter?
4. Thanks for picking up the flaw, now report the bug to apple.
4. Bureau of redundancy bureau... thanks for listing 2 number 4s
Well if you're having these problems, no need to complain here, let APPLE know on the feedback form where you can report bugs or suggestions. It's as simple as apple.com/feedback then you just select your product.
Did you have a question? No, didn't think so.