I got a message earlier from my cousin in Las Vegas, she was worried about ability to send texts while her daughter’s iPhone was locked. A real comedian decided to message her from her daughter’s phone via Siri. She was surprised they were able to send a message, regardless of the iPhone passcode. Luckily it was just a funny message and there was no malicious intent. I informed her that Siri is usable from the lock screen, unless that functionality is disabled. She found the following information extremely useful and felt others might want to know the same thing. As such, here are the steps to disable access to Siri from the lock screen.
On iPhones and iPads running iOS 8 or later, Siri and notifications are accessible from the lock screen by default. If you wish to block that functionality, follow these steps:
- Tap on the Settings application on your iPhone or iPad.
- Click on Touch ID & Passcode
- Enter your passcode when prompted
- Scroll to Allow Access When Locked
As you can see, I’ve toggled off access to my notifications, Siri and the ability to reply to a text without unlocking. Select what you want and hit the settings button in upper left to go back. Now your lock screen is secure again.