If you can't update or restore your iPhone, iPad, or iPod touch. You can put your iOS device in recovery mode and then restore it with iTunes. In these situations, you might need to use recovery mode to restore your device: 1  iTunes doesn't recognize your device or says it's in recovery mode.
Text messaging, or texting, is the act of composing and sending brief, electronic messages between two or more mobile phones, or fixed or portable devices over a phone network.
edit Definitions. SMS is the abbreviation for Short Message Service and is the text communication service component of a phone or mobile communication system, using standardized communications protocols that allow the exchange of short text messages between fixed line or mobile phone devices.