The US-based tech giant, Apple recently released the latest iOS software update: iOS 11.2, which brought Apple PAy Cash to the iPhone, not they have released another update, iOS 11.2.1. The Apply PAy Cas feature is currently available in the US, but it is expected in more countries soon.
The iOS 11.2.1 update comes with some bug fixes and improved performance. One of the bug fixes is concerned with the camera not focusing properly on the recently-released iPhone X, iPhone 8 and iPhone 8 Plus handsets. This bug has been around with the iPhone since the release of iOS 11.2. iPhone and iPad owners can install the latest update by going to Settings > General > Software Update.