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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(227.2, 0%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EP%3C/text%3E%3C/svg%3E)
Someone please tell me that .maui on iOS is not as slow as it looks?
I am running my app in debug mode, works fine in Android, Windows.
However when I launch on iOS, it is extremely slow, it takes almost 20 seconds from the splash screen appearing to the app opening. Opening another window take almsot 10 seconds. It is completely unusable this way.
Any ideas what could be wrong? I have no issues on the other platforms and there is nothing major that I am doing in the code to cause this dely.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(310.4, 6%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELL%3C/text%3E%3C/svg%3E)
Is this problem on the iOS simulator or the physical device?
What is your .NET version?
Do you use pair to mac way to debug your application in windows or debug your application in VS for mac or VS code in Mac?
I am targetting .net 8 on the device itself. I run VS on windows and debug remotely thorugh my MAC. It worked fine with my xamarin.iOS application.
Even if I just launch the app itself on the device without running through VS, it is just as slow.
This issue is reported in the MAUI GitHub repo: iOS app startup slow in debug #11392, you can track on this issue. If PG fix this issue, they will update it in MAUI GitHub repo.
if I just launch the app itself on the device without running through VS, it is just as slow
You can try to release build on Mac, deployed to TestFlight and then installed on iPhone. This startup time will be quick.
I find a workaround in above GitHub repo, please connecting both your PC and Mac via ethernet, not use WIFI
I am kind of stunned. This issue has been going on for over a year with no fix.
Not only that, we are losing the option of developing for xamarin.ios and in place we are being forced to use maui which is still in alpha state?
I forgot to mention that I use a Lan cable and don't use wifi for this.
It seems your issue is different from the above known issue.
If you create a new MAUI project and debug it, will you get same issues?
Can you share your specific version of MAUI? You can try to use .Net 9 preview to make a test.
Did you try to release your application, deployed to TestFlight and then installed on iPhone?
Based on your description, it seems your issue is not similar with the above known issue.
If you create a new MAUI project and debug it, will you get same issues?
Can you share your specific version of MAUI? You can try to use .Net 9 preview to make a test.
Did you try to release your application, deployed to TestFlight and then installed on iPhone?
When I create a new project, it won't build, it just cancels with the error:
Verification of iOS environment is running. Please try again in a moment.
Does not matter how long I wait, it will not get past that..
It builds for windows and an attached android device without issue.
What is your iPhone version?
Can you share your iOS version?
I test it in my side with iPhone XS MAX and MAUI 8.0.72, when I debug it, splash screen will take about 10s. But released application will be quick.
Verification of iOS environment is running. Please try again in a moment.
Can you share the log information in the output window?
As per my other thread, I had to create a new maui project, then copy over all my source, etc.
Now debug is still slow, but only takes about 3-4 seconds to get past the splash screen.
I was able to deploy a release version and it ran much better.
Thanks for your sharing.