iOS 12.1.3 (build 16D5032a) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2018-12-19T18:07:08Z. The update package is 315.76 MB. This is a delta (partial) update that requires 12.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: aa899ed596d7ea8bb9bc2d7b3ffb0474cd648559.zip.