“It is not possible to turn off my iPhone 6s by sliding the screen or slide for the past two weeks. I have restarted my iPhone many times and this features is not responding at all. How can I fix it?”
“Slide to Unlock/Power Off” is the key to turn on/off your iPhone. However, many people suffer from the the issue that “Slide to Unlock” or “Slide to Power Off” not working on iPhone. This problem would drive you crazy when you are facing it. In order to solve the trouble, what you need to do first is to make sure it is related to software problem or hardware problem. As for a hardware problem, you have to take your iPhone to authorized Apple store for a repair. As for software problem, keep on reading below article to find some possible solutions to figure it out.
Before you head down to the following workarounds, here are some important things you should check out on your iPhone in advance.
1. Make sure that your iPhone is up to date with the latest version of iOS. If it's a bug, then it could already be addressed. Please go to Settings> Software Update and check for it.
2. Keep your screen clean from water, dust, oil and sweat. It's a good habit to clear your iPhone up with a piece of soft fabric or tissue. Don't use rugged items to wipe the screen which could make it worse.
3.Above all, you have to check whether it's a hardware issue. If yes, there is no need to proceed to read on. If not, get it solved with the following resorts. Please make a phone call to your iPhone which is acting up and see whether you can slide the bar - "slide to answer". If you can do so, it probably would be a software problem. Or, you can swipe up and launch "Calculator" app and tap on whether the buttons are available.
Solution 1: Remove Screen Protector on iPhone
If the problem is rolling out after you put a screen protector on your iPhone, now you may need to take it off. A protector with poor quality might sharply decrease the sensitivity of the screen, so please take it off and see whether slide buttons are working now.
Solution 2: Dry Your iPhone out If It Got Damp
If you're currently outdoor in a rainy day or living in somewhere full of moisture, then you ought to be cautious. You iPhone might be damped. Though it might not as wet as you can see the drops on the screen, it might get damp inside, making the slider unresponsive. Therefore you should get your iPhone wrapped up when it's raining or find means to make it dry. You can use a hairdryer or put it on a bowl of uncooked rice.
Solution 3: Hard Reboot Your iDevice with Buttons
Now that you cannot power off your iPhone with a slide, you might try to hard reboot it with buttons. Also, a hard restart is able to repair some temporary systematic snags to some extent. Now, please hold down and press "Wake/Sleep" and "Home" buttons at the same time until the screen goes dark. After a while, you can power it on with "Wake/Sleep" button.
Solution 4: Reset iPhone As a Brand New One
The final resort is to reset your iPhone. In the process of factory reset, all content and settings on iPhone will be wiped out. It can effectively solve most iPhone problems but the drawback is that it would lead to data loss. That's why you should make a full backup for your iPhone before you continue. There are two methods to reset your iPhone:
1. On iPhone: go to Settings> General> Reset> Reset All Content and Settings.
2. With iTunes: Connect to iTunes and enter "Summary" page. Click "Restore iPhone..." button on the right.