I’m currently working on an iOS application, that has already been deployed on the App store. I’m still experimenting with it internally with a few friends, but I noticed that for some of them, when the app is installed it is just displayed as a blank screen or with missing icons or default font colors.
The app passed through App store screening before it was deployed, but I suspect that there is a compatibility problem. I was wondering if anyone has suggestions on what the cause might be, and how I may resolve it.
Link to see the screenshots of the normal and buggy versions of the app: https://docs.google.com/document/d/e/2PACX-1vR6r3lqu-tbI88UH8Q9NLFmRZ_QM9bOCpf9PExGZvtWTMWoZR87nN8vVPmjkgwSA5cf4BVAVlyibz6q/pub
Link to download app: https://apps.apple.com/us/app/anyamessenger/id6475115468
A little about the application --> It is a security surveillance iOS app that aims to minimize criminal illiteracy by providing citizens with technology for staying aware, secure, and connected. It includes features such as direct messaging, rapid alert system, sensory data monitoring, and a siren observability module.
I'm open to sharing my code too for a review, but only privately. Thank you so much in advance!
First of all, kudos to you for beta testing your app before marketing it. Usually beta testing iOS apps is done by releasing the app to Apple Testflight (iOS app store exclusively meant for various levels of app testing before relasing it to the main app store).
Coming to the bug you're facing - I have only built native Android apps, but I guess this idea holds good for iOS too. Assuming yours is a native iOS app, usually these things happen when the app uses advances UI widgets that are unsupported in OS versions below a certain version.
To validate this hypothesis, check the iOS versions of the apps of all your friends. Then, check if the issue persists on phones of a particular version and below. If that is the case, then you can solve it in 2 ways:
Sometimes it's possible your app is using stable UI widgets and still recent iOS versions have this bug. In that case, you will have to go through the hard route of trial and error on multiple phones (ideally 3 having a mix of buggy and non buggy versions of your app) with different iOS versions.
Hope this helps!
So I have done both Android and iOS with 10+ years of Android and 3+ years of iOS. I have a couple hypotheses:
At a high-level, your goal right now should be to find the repro. This should be easy as the iOS Simulator suite is very good. Keep spinning up phones until you hit the bug, focusing on OS changes. If you know the phone that produced the bug, just copy its settings.
I highly recommend our debugging masterclass as well. A lot of the principles there can be applied here (like with the repro). You can watch it here: [Masterclass] How To Become A Debugging Master And Fix Issues Faster
Check this out too: "Good resources to learn iOS app development?"