Check if iOS device is capable to call / send SMS message

CoreTelephonyCheck.swift

// Swift version of the code from http://stackoverflow.com/a/30335594/1986600

import CoreTelephony

override func awakeFromNib() {
	super.awakeFromNib()

	let isCapableToCall: Bool
	if UIApplication.sharedApplication().canOpenURL(NSURL(string: "tel://")!) {
		// Check if iOS Device supports phone calls
		// User will get an alert error when they will try to make a phone call in airplane mode
		if let mnc = CTTelephonyNetworkInfo().subscriberCellularProvider?.mobileNetworkCode where !mnc.isEmpty {
			// iOS Device is capable for making calls
			isCapableToCall = true
		} else {
			// Device cannot place a call at this time. SIM might be removed
			isCapableToCall = false
		}
	} else {
		// iOS Device is not capable for making calls
		isCapableToCall = false
	}
	
	// Do something with isCapableToCall
	
	let isCapableToSMS: Bool
	if UIApplication.sharedApplication().canOpenURL(NSURL(string: "sms:")!) {
		isCapableToSMS = true
	} else {
		isCapableToSMS = false
	}
	
	// Do something with isCapableToSMS
}