If you use Siri on your iPhone or iPad, you might have realised that there are some situations that aren't conducive to talking to Siri. If you're in a loud or crowded place, or don't want to be seen while talking to an invisible assistant, you can text Siri instead. Once you enable the Type to Siri option found in the system settings app on your iPhone, iPad, or Mac computer, you will be able to ask Siri questions over text on your Apple devices. This is a useful way for introverted users to access Apple's voice assistant without speaking a word.