Unc0ver jailbreak released iOS 12 to iOS 12.1.2 ( No Pc guide )
iOS jailbreak developer Pwn20wnd released Unc0ver jailbreak for iOS 12 to iOS 12.1.2. Unc0ver jailbreak automatically installs Cydia once complete the jailbreak.
You can install Unc0ver jailbreak without PC support ( Online ) with pangu8 zJailbreak
Unc0ver jailbreak only supports for A8X-A11 devices.
iPhone X / iPhone 8 / iPhone 8 Plus / iPhone 7 / iPhone 7 Plus / iPhone 6s / iPhone 6s Plus / iPhone SE
12.9 inch iPad Pro 2nd Gen / 12.9 inch iPad Pro 1st Gen / 10.5 inch iPad Pro / 9.7 inch iPad Pro / iPad 6th gen iPad 5th Gen / iPad Air 2
iPod Touch 6th Gen
Guide
Install zJailbreak
Install Unc0ver
Go through Settings - General - Trust the App
Tap the jailbreak button
Wait to complete all the steps
Cydia install
-----------------------------------------------------------------------------------------------------------