Error: Could not find iPhone 6 simulator

I got this error when i ran: react-native run-ios

Could not find iPhone 6 simulator

Error: Could not find iPhone 6 simulator
    at resolve (/Users/xman/Desktop/TEST_COM/APP/orderapp/node_modules/react-native/local-cli/runIOS/runIOS.js:149:13)
    at new Promise (<anonymous>)
    at runOnSimulator (/Users/xman/Desktop/TEST_COM/APP/orderapp/node_modules/react-native/local-cli/runIOS/runIOS.js:134:10)
    at Object.runIOS [as func] (/Users/xman/Desktop/TEST_COM/APP/orderapp/node_modules/react-native/local-cli/runIOS/runIOS.js:106:12)
    at Promise.resolve.then (/Users/xman/Desktop/TEST_COM/APP/orderapp/node_modules/react-native/local-cli/cliEntry.js:117:22)

[react-native-bot]

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Please make use of the bug report template to let us know about a reproducible bug or regression in the core React Native library.

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[ovaisahmed43]

same issue here

[HannanShaikYara]

same issue here. Please help.

Info:
React Native Environment Info:
System:
OS: macOS High Sierra 10.13.6
CPU: x64 Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
Memory: 1.26 GB / 16.00 GB
Shell: 5.3 - /bin/zsh
Binaries:
Node: 10.11.0 - /usr/local/bin/node
Yarn: 1.10.1 - /usr/local/bin/yarn
npm: 6.4.1 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 12.0, macOS 10.14, tvOS 12.0, watchOS 5.0
Android SDK:
Build Tools: 23.0.1, 25.0.0, 25.0.2, 26.0.1, 26.0.2, 26.0.3, 27.0.1, 27.0.3, 28.0.1
API Levels: 21, 22, 23, 25, 26, 27, 28
IDEs:
Android Studio: 3.1 AI-173.4907809
Xcode: 10.0/10A255 - /usr/bin/xcodebuild
npmPackages:
react: 16.5.0 => 16.5.0
react-native: 0.57.2 => 0.57.2
npmGlobalPackages:
react-native-cli: 2.0.1
react-native-create-library: 3.1.2
react-native-git-upgrade: 0.2.7
react-native-scripts: 1.14.0

It works from XCode but command line it is not working.

[apoorv487]

This error is occurring because the response of "xcrun simctl list --json devices" got changed. "availability" is changed by "isAvailable"
Workaround :
Open file findMatchingSimulator.js --> Replace simulator.availability !== '(available)' with simulator.isAvailable !== 'YES'

[apoorv487]

This error is occurring because the response of "xcrun simctl list --json devices" got changed. "availability" is changed by "isAvailable"
Workaround :
Open file findMatchingSimulator.js --> Replace simulator.availability !== '(available)' with simulator.isAvailable !== 'YES'

Thank you very much. I was breaking my head from so many days.

Curious to know, who is at fault here? XCode? or React Native?

I would say XCode. Accordingly ReactNative code should be updated. I would like to add pull request for that but this issue is already been closed by bot. Any idea how could I do that?

[Admin-Teem]

Same issue here. Editing :

  ./node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js

This:

function findMatchingSimulator(simulators, simulatorName) {
  if (!simulators.devices) {
    return null;
  }
  const devices = simulators.devices;
  var match;
  for (let version in devices) {

    console.log(" version in devices ");
    console.log(version);

    // Making sure the version of the simulator is an iOS or tvOS (Removes Apple Watch, etc)
    if (!version.startsWith('iOS') && !version.startsWith('tvOS')) {
        console.log(" expecting code to find iOS simulator version, but it fails. ");
      continue;
    }

shows me:

com.apple.CoreSimulator.SimRuntime.tvOS-12-1
 expecting code to find iOS simulator version, but it fails. 
 version in devices 
com.apple.CoreSimulator.SimRuntime.iOS-12-1
 expecting code to find iOS simulator version, but it fails. 
 version in devices 
com.apple.CoreSimulator.SimRuntime.tvOS-12-2
 expecting code to find iOS simulator version, but it fails. 
 version in devices 
com.apple.CoreSimulator.SimRuntime.watchOS-5-2
 expecting code to find iOS simulator version, but it fails. 
 version in devices 
com.apple.CoreSimulator.SimRuntime.watchOS-5-1
  expecting code to find iOS simulator version, but it fails. 
 version in devices 
com.apple.CoreSimulator.SimRuntime.iOS-12-2
 expecting code to find iOS simulator version, but it fails. 

So I guess the structure of version has changed, and this is breaking the code?

I'll point out that doing string matching, based on strings being passed in from other tools and even other eco-systems, is bound to be fragile. Not that I can think of an alternative.

[leotm]

In case anybody else stumbles here, my solution was different.

What fixed it for me was manually updating our node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js from

if (!version.startsWith('iOS') && !version.startsWith('tvOS'))

to

if (!version.startsWith('com.apple.CoreSimulator.SimRuntime.iOS') && !version.startsWith('com.apple.CoreSimulator.SimRuntime.tvOS'))

If you console.log(version), each is now prefixed with com.apple.CoreSimulator.SimRuntime.

---

Also looks like

simulator.isAvailable !== 'YES'

should now be

if (simulator.isAvailable !== true)

---

And for anybody now getting: Nullability Issue Pointer is missing a nullability type specifier

I've created a gist that fixes RCTLinkingManager.h here: https://gist.github.com/leotm/05e34468f25c29623a731692738e140e

And finally get a successful build with XCode 10.2 (10E125) \o/

[Kamahl19]

After upgrading to Xcode 10.2 this needs to be done if you are still using RN 0.53

open
node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js

replace
if (version.indexOf('iOS') !== 0)
with
if (version.indexOf('com.apple.CoreSimulator.SimRuntime.iOS') !== 0)

[khacnha]

Thank @Kamahl19 , it work for me!