Using Siri is an inside trick to bypass iPhone passcode, which is only be applied on iOS 12. That's because there exist the security weaknesses on this iOS version. Maybe you are in the dark about how to do it via Siri. Hence, the complete steps are propounded below.
Step 1: Hold down the "Home" button to activate Siri and then ask Siri what time it is or other questions;
Step 2: Siri will show you a clock. Then the thing you need to do is tapping the clock icon;
Step 3: This action can make the World Clock, Alarm, Timer, etc appear. Now, you ought to click on "Alarm" and need to set a song for the alarm clock;
Step 4: In this interface, the "Buy More Tones" option will come in your sight. Just touch it to bring your iPhone to the iTunes store;
Step 5: Presently, there is nothing to be needed to do but press the "Home" button. Like that, you iPhone will return to the home screen and you can get into iPhone without passcode.
Way 2: Take Advantage of iCloud
With the exception of Siri, iCloud also supports to hack iPhone passcode without using a computer. The "Find My iPhone" function that it comes with enables it to remotely erase the iPhone, thereby cracking the screen passcode on your device. If you happen to have turned on this feature on the iPhone, please follow the instructions stated below to have it done with iCloud.
Step 1: First of all, you should visit www.icloud.com on your another iOS device and log into your iCloud account with the Apple ID linked with the iPhone;
Step 2: From the available options, choose "Find My iPhone" and then tap on "All Devices";
Step 3: All devices related to this Apple ID will be displayed. You just select the iPhone you want to crack passcode;
Step 4: In a pop-up window, please touch "Erase iPhone" to hack the screen passcode.