Upgrading from one iOS version to another historically means users have to accept that they will have free storage on their devices after upgrading. It has been accepted that every major version of the platform requires only more storage space as installation.
That has not happened on iOS 11, it's a lot of fun to users. Now, continuing that trend, it seems to move from iOS 11.0.2 to iOS 11.0.3 gives owners of devices with more free space.
Apple is working very hard to keep pushing small updates for all compatible devices running iOS 11 variants. The Cupertino-based business has now driven three gradual improvements with iOS 11.0.1, 11.0.2, and now iOS 11.0. 3, while also having iOS 11.1 in a pre-release state with developers and public testers. Each released version not only fixes bugs, weaknesses, security flaws, and a host of other issues, it's also generous enough to offer less efficient use of less space on the device. This results in the user getting back a little more space to be used for something else.
With the installation of iOS 11.0.3, storage advantages seem to be minimal when placed compared to previous releases of the platform. For example, on our 128GB 128 Plus iPhone alone is available 84.82GB before upgrading iOS 11.0.3. When the process is complete, a total of 85.06GB is available, which is a profit of around 250MB.
It feels less than what we've used when upgrading to an earlier version of iOS 11, but it's still worth the better space available on the iPhone or iPad rather than being consumed actively by a greedy OS. That will definitely give you space for some apps or some new photos taken with the device's camera.
As always happens, individual mileage will vary by device per device. Those with larger storage capacity devices are the ones who tend to reclaim most of the space as part of this upgrade process. If you are going to upgrade to iOS 11.0.3, be sure to see how much space is available before you go through the process.
Source : http://www.redmondpie.com