Aside from all the ten-year-old kids out there who can run circles around the rest of us when It comes to technology, there’s probably a few nifty features you didn’t know your iPhone was capable of. Sometimes you can’t even ask Siri, because it turns out she has a mean streak. Here are five things you didn’t know your iPhone could do – but be warned – they have varying levels of usefulness.

1. Hide Your Private Photos
This is one all of us could have probably used at some point in the past (get your head out of the gutter). Whether it’s a screenshot of a rude conversation that you
sent to your friend, or a series of three hundred selfies that you’d just rather not be judged for, there’s a handy iPhone trick to hide sensitive info. Once inside your photos, select the images you want to tuck away. Tap on Share, then select Hide. They’ll be stored in an album labelled Hidden. This enables you to show friends the pictures you have in any other album without worry of them stumbling into a covert territory.

2. Have Siri Tell You Off
So, apparently Siri doesn’t really have patience for what she deems to be stupid questions, and she appears to have some sort of past lament with the cookie monster too. Just ask Siri what zero divided by zero is to eventually be told that without cookies you have no friends, and cookie monster is also sad because he has no cookies (maybe don’t try this while you’re feeling blue). Also, don’t tell her you’re naked. She doesn’t like that.

3. Get a Proper Night Sleep
If you go into the Clock app on your phone, and then click on the Bedtime link below, you can begin a set up process meant to help you stick to a decent sleeping schedule and get a better rest. All you have to do is answer your phone when it prompts you when you’d like to wake up and fall asleep, and it will turn on your Do Not Disturb setting for you automatically at bedtime. It even pings you to remind you when to go to sleep, and you can set a Monday-Friday schedule, so it will turn off automatically on weekends.

4. Write on Email Attachments
There’s a little symbol in the top right corner of your PDF attachment that has a pen tip in a circle. Click on it, then you can go ahead and circle anything you need or write a note on the PDF file. You can easily discard your changes afterhitting Done if you need to restart your work. Alternatively, if you are the one who attached file you can tap it before sending and select Markup.

5. Change Your Notification Style
If you dislike the way your messages are appearing on your screen, you can change them in Settings. Just press Notifications and select the desired app that you’re interested in changing. It can get annoying to get game notifications constantly, and sometimes you don’t want an iMessage to stay available to read on your home screen. You can switch these messages to a scrolling banner. You can also customize your notifications for the sound to differentiate between a text, reminder, push notification so you know what to jump out of your seat for, and what can wait.