Set your iPhone to vibrate when you receive a text message. You can configure the iPhone to vibrate when in “Silent” or “Ring” mode, which means you can set the device to vibrate whether or not a ring tone notification is set for text messages. First, enable vibrate for Silent and/or Ring modes, and then configure the text notification vibration for text messages. Next, choose from a selection of vibration patterns, including “Heartbeat,” “Quick,” “Rapid,” “S.O.S.” and more. Warnings Writer Bio

How to Set an iPhone on Vibrate for Text Messages - 28