Question: iOS 12.4 Charging Stopped Working
Thought this would help others out there. Are you using a non-Apple charging cable? Has your iPhone or iPad stopped charging after installing iOS 12.4? I recently installed iOS 12.4 and it caused my non-Apple charging cable to stop working on my iPhone 5s and my iPad mini 4. The Lightning cable that is used to charge iPhones and iPads has a chip inside it to authenticate the cable meets certain Apple design criteria and non-Apple Lightning charging cables have been known to stop working after an iOS software update, even those that have the chip and have been certified by Apple.
Cynical people will say it's Apple's way of getting you to buy their Lightning charging cables, but I've always used non-Apple Lightning cables because for my usage I need a longer cable of 10+ feet and I never had a problem with them, until iOS 12.4.
Your only solution is to buy an Apple brand Lightning cable or try another non-Apple Lightning cable. Make sure it has the certification logo. It'll be a rectangular box with rounded corners that say made for iPhone, iPad, etc. Sadly such branding can be easily added to any packaging by a bogus manufacturer or reseller so try to buy from a known brand. You can also look up the cable to check for certification in the link below.
In the meantime there is a way to charge your iPhone or iPad that should work. It's how I've been charging my iPad and iPhone until I feel well enough (I’m sick) to get a new cable. This is what you do. 1- Make sure the charging cable is plugged in and ready to be used. 2- Keep it close to the charging port of your iPhone or iPad ready to be quickly inserted! 3- Turn off your iPhone or iPad and as soon as the screen goes black after using the sliding on screen button to turn it off, very quickly plug in the charging cable! If you time it just right the iPhone or iPad will now charge, BUT it needs to be left alone and turned off! If you turn it on before it is fully charged it will go right back to not acknowledging the charging cable and not charging! Leave it off and after however long it usually takes to charge your iPhone or iPad to 100%, then you can turn it on. You're iPhone or iPad will then be fully charged.
You can also confirm the charging is working by first noting your current charge level, following the steps above and then after ten minutes turn on your iPhone or iPad. If it is charging then your charge level will have risen. Once you confirm it is working then repeat the steps above leaving the iPhone or iPad off until it is fully charged.
This is not an ideal situation but can certainly save the day, especially when traveling and where you don’t have immediate access to buy a new cable. Incidentally, never update iOS, or any software, immediately before traveling.