If you are still using iPhone 5s, iPhone 6, you must download this security update

Apple in the release note has asked the users of the iPhone 5s, iPhone 6, iPhone 6 Plus, iPad Air, iPad mini 2, iPad mini 3, and iPod touch (6th generation) to update to iOS 12.5.4. HIGHLIGHTS If you are still using an iPhone 5s, iPhone 6 or iPhone 6 Plus and gadgets running iOS 12, Apple has an important update for…