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.
In the phrase SMS messaging, SMS stands for short message service.. SMS is a means of sending text between mobile phones, and it can also be used to send text from a computer or tablet to a mobile phone. Only 160 characters are allowed in an SMS message. Full Answer >.