Unfortunately not if you are using stock iOS. However, this could be done if you were to Jailbreak your iPhone.
a default app that says "settings"
The new safari iOS 7 will help an iPhone user to bring back deleted history on the iPhone safari without the advanced settings in the settings app.
You can connect your iPhone with a BlueAnt by searching for Bluetooth device, select settings, general, Bluetooth, then select BlueAnt device from the list, enter pin or zero, then connect.
Yes. Any iPhone after the iPhone 4S comes with Siri, but you have to choose to enable it when you're setting up the iPhone for the first time. You can always change your mind (and other Siri settings) later, by going to the Settings app. 10
Go into the Settings app>General>Software Update>Download and Install.
There is an AOL IM App, email you can set up in settings, mail.
Yes. Any iPhone after the iPhone 4S comes with Siri, but you have to choose to enable it when you're setting up the iPhone for the first time. You can always change your mind (and other Siri settings) later, by going to the Settings app. 10
You can change your number in your settings. Go to your settings and press phone. Then press my number. You can now change your number.
The app store should come built in with the iPhone, if it's not there check your settings and restrictions, you may have locked it. If all else fails go on iTunes on the computer and you should be able to get it. Hope this helps!
Yes, there is bluetooth on iPhone 5. You can turn it on in the Settings app or from the Control Centre.
You enter the Settings app, select Wi-Fi, and select the network to connect to.
You can't change your password on the Pinterest iPhone app. Log in to the Pinterest website to change your password.