Good News for The old iPhones and iPads
iPhone 5s, 6 and 6 plus and iPod touch(6th Gen), iPad Air(1st Gen) and last iPad Mini(2,3) yesterday received iOS version 12.4.6. All of these devices are 5 to 4 years old and based on the ancient processors.
It is a good gesture from Apple that care their customers those have old Apple devices. Yesterday Apple announced 13.4 iOS version for the latest Apple smartphones and the iPads, along with that apple released the 12.4.6 iOS for the old devices, so, don't vary apple has not forgotten about the old series.
iOS 12.4.6 is kinda a security patch from Apple, as Apple is very in providing the security updates for a very long period of time. This update doesn't add any new feature but all in all this update give some stability and under the hood changes for the better battery life.
TechOutputs suggest you go to the setting app and navigate to the update section in your Apple smartphone and update the latest version of iOS.