Hi, I’m Jan from iDoc. If your iPhone is having software problems, there are various ways to solve them. I’m going to show you three options using the iPhone 7 as an example because the key combinations have changed since the iPhone 7. The first option we have is a hard reset, meaning you force your iPhone to restart, and then the second option is recovery mode, meaning that we do a full recovery of the device. Our third option is DFU mode or a DFU restore. In this case, you reinstall the entire operating system and other software. We can use our first option, the hard reset that forces the device to restart, to fix smaller problems. For example, you need a hard reset if an app gets stuck or the whole operating system freezes. I use a key combination to start the hard reset. For the iPhone 7, it’s the volume down and Sleep/Wake buttons. I press and hold the two buttons. The device powers off and restarts. As soon as the device starts up, meaning the Apple logo appears, I can let go of the buttons. I have to hold them for about ten seconds. The hard reset is convenient if you’re out because you don’t need any accessories and you can restart your device. Our second option is recovery mode. We can either update the operating system or completely restore it. To run recovery mode or a restore, we need not only the iPhone, but also a Lightning cable, a Mac or Windows computer with the latest version of iTunes, and an internet connection. To access recovery mode, I open iTunes on the computer and connect my iPhone to the computer. Then I use a key combination by pressing the volume down and Sleep/Wake buttons at the same time. I hold them down and wait for the device to restart. But I don’t let go of them. I keep holding them until a message appears on the display saying the device should connect to iTunes. We also see a message in iTunes saying we’re in recovery mode. The device was starting up, but then the process got canceled, meaning that not all the software loaded. In iTunes, you can see that we now have the option of either updating or restoring the device. I recommend that you always update it first because an update lets you keep all your data like pictures and contacts. A restore makes sense if, for example, you want to sell your used iPhone. It completely deletes all your personal data. Always turn off the “Find My iPhone” function first because you have to reconfigure the device once it’s restored. If you don’t disable this function, the phone will ask for your Apple ID and password during configuration. You can also exit recovery mode by holding down the Sleep/Wake button for a while. Our third option is the DFU restore. DFU stands for Device Firmware Upgrade. It’s the most in-depth option we have for completely reinstalling the software. A DFU restore reinstalls not only the iOS operating system, but also other software that enables the iOS software to run on the hardware in the first place. Once again, the key combination for performing the DFU restore is the volume down button with the Sleep/Wake button. I hold them both down again. I wait until the screen goes black. Then I release the Sleep/Wake button. iTunes lets me know as soon as I’m in DFU mode. Other than that, the display stays dark because the software hasn’t started up, meaning the iPhone didn’t boot up. iTunes has detected the iPhone in DFU mode, so now I can confirm the restore with “OK.” The current iOS operating system software is downloaded and then installed on the iPhone. As soon as installation is complete, you have to reconfigure the iPhone. Once again, if “Find My iPhone” is enabled, you have to enter the Apple ID and password again to set up the iPhone. You can also exit DFU mode by holding down the volume down and Sleep/Wake buttons for about 20 seconds. The device then restarts as usual, and you’re back in the iOS operating system. I hope you were able to solve the software problems on your iPhone. If you have any questions, just post them in the comments here on YouTube. Subscribe to our channel to make sure you don’t miss anything. We’d also love to hear any ideas you have for new videos.