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Running React Native apps on specific iOS simulators

Perttu Lähteenlahti
October 31st, 2019 · 1 min read

If you’re developing React Native apps for iOS you’re most likely familiar with this command:

1react-native run-ios

In most cases that command opens up the iPhone X simulator. Instead, if you want to open your React Native app in a specific simulator you can also add the wanted device name with the simulator flag like this:

1react-native run-ios simulator='iPhone 8'

And it will open up the iPhone 8 Simulator. You can get the full list of available devices with the command

1xcrun simctl list devices

And here’s a list of all the available devices available for testing:

1react-native run-ios --simulator="iPhone 5s"
2react-native run-ios --simulator="iPhone 6"
3react-native run-ios --simulator="iPhone 6 Plus"
4react-native run-ios --simulator="iPhone 6s"
5react-native run-ios --simulator="iPhone 6s Plus"
6react-native run-ios --simulator="iPhone 7"
7react-native run-ios --simulator="iPhone 7 Plus"
8react-native run-ios --simulator="iPhone 8"
9react-native run-ios --simulator="iPhone 8 Plus"
10react-native run-ios --simulator="iPhone SE"
11react-native run-ios --simulator="iPhone X"
12react-native run-ios --simulator="iPhone XR"
13react-native run-ios --simulator="iPhone XS"
14react-native run-ios --simulator="iPhone XS Max"
15react-native run-ios --simulator="iPhone 11"
16react-native run-ios --simulator="iPhone 11 Pro"
17react-native run-ios --simulator="iPhone 11 Pro Max"
18react-native run-ios --simulator="iPhone XS Max"
19react-native run-ios --simulator="iPad Air"
20react-native run-ios --simulator="iPad Air 2"
21react-native run-ios --simulator="iPad"
22react-native run-ios --simulator="iPad Pro"
23react-native run-ios --simulator="iPad"

I’m getting “Could not find iPhone X simulator” or similar error message when running this command

At times you might run into problems with this command. This error message, for example, is quite common:

1Could not find iPhone X simulator
3Error: Could not find iPhone X simulator

This often caused by updating to a new Xcode version which doesn’t include the iPhone X simulator any more, which is the default for react-native-cli. This problem should disappear when you pass the simulator flag and another device than iPhone X.

This was a quick and simple guide to running on different iOS simulators when building React Native apps. I wrote this because I found myself googling different device names too often. I hope that you find it useful 🙂

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