I'm working on an app that lets the user combine different options to build a product. The process is as follows:
Screen 1. A first screen where the user decides what to build.
Screen 2. Second screen where the user sees all Options as tabs. The user can switch between tabs to play with the options and do some selections in each tab, in any desired order. This 4 selections happen in the "same canvas".
*Tabs do not follow a strict order, so there is no sequential steps involved (no previous or next buttons within Screen 2)
The question is: Will a user expect the BACK button to take them to the Screen 1, OR to the previously selected tab within the Screen 2?
Here's a quick sketch of Screen 2:
Any advice is much appreciated. Thanks!