Jailbreaking is not something that is supported by Apple; however, people still do it. If you choose to jailbreak, make sure your iPhone is running a supported version of ios. UnOver is the safest known way to jailbreak into your iPhone.
It is also one of the few choices that can jailbreak recent releases.
• Install AltStore on your Mac.
• This application permits you to retrieve the tool that can jailbreak your iPhone.
• Go to https://altstore.io and click the Mac OS link at the bottom of the page.
• Unzip file altserver.zip in your default downloads folder.
• When it is unzipped, you will see a file Altserver.app.
• Drag AltServer .app to your applications folder.
• Open AltServer.
• Click the AltServer icon and select the Install Mail app.
• Connect your iPhone to your Mac.
• Click the AltServer icon and select Install mail Pug in.
• Enact AltPlugin for the mail app.
• Connect your iPhone to your Mac.
• Click the AltStore icon and select your iPhone.
• Log in to with your Apple ID and click install.
• Use the same Apple ID you use on your iPhone.
• Set up your iPhone to trust AltStore.
• Install to uncover.
• This installation is a jailbreak tool.
• Open uncover.
• Click ok on the confirmation message.
• Run the jailbreak tool to uncover a second time.
• When the jailbreak is complete, tap ok again and wait for iPhone to reboot.
• When the iPhone comes back up, it will be in jailbreaker.