tns run ios cannot start app on iPhone and does not sync changes

[erkanarslan]

Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):

• CLI: 6.1.2 and 6.2.2
• Cross-platform modules: 6.1.2
• Android Runtime: 6.1.2
• iOS Runtime: 6.1.1
• Plugin(s): unrelated

Describe the bug
tns run ios command can install, restart and sync the app on iOS emulator, but cannot on real iPhone device.
I see that app is installed on the device. Consol log shows that Nativescript is trying to "Restarting the app" but it stays there. I have to manually tap the app icon to start the app. If I make changes on the code, changes aren't synced too. I see that webpack build is done but nothing else happens. It just stays there. I have to kill the command and rerun it every time I make a change.

To Reproduce
Create a project. Connect iPhone. Run tns run ios. It shows "Restarting application on device 8ad303e2f6bf07f0329fb6a43329e99d14d98604..." at the end, but nothing happens.

Expected behavior
It should restart the app and sync it.

[rosen-vladimirov]

Hey @erkanarslan ,
This issue may happen in cases where your Xcode is an older version that is unable to start application on the current iOS Device. For example in case your Xcode version is 10.x.x, but you are trying to deploy the application on device with iOS 13 version.
Can you verify your Xcode is up-to-date? In case it is, can you try creating new iOS Application in it and try to deploy on the device directly through Xcode?

[DanHef]

I face the same issue for a while already and I have the newest Xcode version (11.3.1) with multiple iOS13 devices (same behavior for all). Running the app from XCode directly works fine (app opens) and running it from the tns CLI in the simulator it is also working. Only the case with a real device gets stuck in the restarting stage.

[erkanarslan]

After upgrading to Xcode 11, my problem is solved. But I won't close this issue because you are facing a problem.

[DanHef]

@erkanarslan which Xcode and iOS versions are you running? Maybe my iOS 13.3.1 is causing issues

[erkanarslan]

Xcode 11.2.1, iOS 13.3.1

[DanHef]

Changing Xcode versions does also not help. It is the same for my older projects as well as a new one I created yesterday. Anyone any idea how to solve this?

[mikaelkalt]

I have the exact same problem. Actually I've had it with an iPhone 8 and now since a have a new iPhone 11, I was hoping the problem would be solved... unfortunately not.

I have update everything to the latest versions. See tns info:

✔ Getting NativeScript components versions information...
✔ Component nativescript has 6.4.1 version and is up to date.
✔ Component tns-core-modules has 6.4.2 version and is up to date.
✔ Component tns-android has 6.4.1 version and is up to date.
✔ Component tns-ios has 6.4.2 version and is up to date.

tns doctor tells me everything is fine.

I am using XCode: 11.3.1 and running an iOS: 13.3.1 and I am developing on a macOS Catalina 10.15.3

My colleague working on the same project, using the same code base, doesn't have the problem. So it cannot really be related to the project setup... Could it be a setting on the phone? Or the operating system? I can run the app without problems directly from XCode.

I'd really appreciate any help because it's very frustrating to develop without live-sync. Please let me know if you need any additional information.

[mikaelkalt]

So actually I am pretty sure that it must be a phone setting since it works with an iPhone SE. And obviously I was using my backup to setup the new phone, so I have the same settings for sure.

[farfromrefug]

Need to bump that issue as i am facing that issue right now. Almost impossible to run an app on device. It runs "sometimes".
XCode 12.2
Cli 7.0.11
Core: 7.0.13

I tried with multiple devices and i always have the same issue

[jessorlisa]

Same issue here, same versions. Running on any simulator works just fine, but running on a real device is almost impossible right now. Not sure when this started.

[NathanaelA]

Have you gone into XCode, then the devices menu and made sure that XCode has provisioned the device properly. After device OS upgrades you frequently have to re-provision the device for development.

[farfromrefug]

@NathanaelA it is not a setup issue
It ils completly random. But mostly Nevers working

[NathanaelA]

@farfromrefug - I've seen this issue normally only after my test phones decided to do a OS upgrade, not in normal day to day usage. Which is why I asked to double check that. Normally if it is provisioned for older OS, NS will have issues deploying to the phone randomly/frequently.

The only other reason I have seen this is if you change your app name in the app's configuration file; then the built version in the platforms folder doesn't match what the CLI believes it is supposed to be and so it has issues starting it.

One thing you can try that almost always fixes "weird" issues; is nuking the app off the phone and deleting the platforms/ios folder. I've seen where HMR's files cause update issues, which is why I almost always run with --no-hmr.