Don't Install iOS 13.1.2 If You Jailbreak
If your device is jailbroken or you think you might want to jailbreak your device, you'll want to avoid iOS 13 for now.
There is currently no way to jailbreak a device running iOS 13 and we have no idea when or even if developers will release a tool for the operating system.
Jailbreak developers have teased iOS 13 jailbreaks several times, but there's no guarantee one is released to the public.
As of right now, if you want to jailbreak your iPhone, you need to be on iOS 12.
Jailbreak developers recently released a working jailbreak tool for iOS 12.4, but it doesn't work with newer iPhone models.
If you want to jailbreak an iPhone XR, iPhone XS, or iPhone XS Max, you need to be on an older version of iOS 12. Unfortunately, there's no way to downgrade.
Keep an eye out for new developments as we push away from the iOS 13 release.