How to Run the iOS 7.1 Simulator in Xcode 7.0 Beta 2

How can I run the iOS 7.1 Simulator in Xcode 7.0 beta 2?

You can't (At least in an Official way).

Sample Image

Taken from Xcode Beta 2 Documentation (Page 7).

Hope it helps.

EDIT SEPT - 2015:

Thanks Cœur for the info, now you can use previous versions of ios simulator.

How to install iOS 7 and onwards simulators in Xcode 7 Beta 5?

Older Simulator runtimes are available for download through Xcode's preferences.

Goto Xcode -> Preferences -> Downloads to see the list of compatible legacy simulator runtimes.

El Capitan supports iOS 8.1 and newer runtimes.

Yosemite supports iOS 7.1 and newer runtimes.

There is a known issue mentioned in the Xcode release notes which prevents the iOS 7.1 simulator runtime from working in Xcode 7.

Thus, you can't currently use the iOS 7.1 simulator runtime with Xcode 7.

Is there a way to get iOS 7 simulator on Xcode 8 beta

No. The iOS 7.1 Simulator runtime is not supported on macOS 10.11 and newer. Xcode 8 requires macOS 10.11 or newer. Thus they are not compatible based on the host OS requirements.

How can I run the iOS 7.1 Simulator in Xcode 6.0 Beta?

Finally I found it

Goto Hardware -> Device -> Manage Devices (In Simulator Menu)

window -> Devices (In Xcode Menu)

From there you can set the ios version and can add new sim from there.

How to launch app using Xcode 7.1 with iOS Deployment target iOS 7.1?

You will need a device with iOS 7.1 to check your app. If you have deployment target set to 7.1 it should run on that device with no problem.

Xcode 7 & iOS 7 simulator

Yes, you can have multiple copies of Xcode.app installed on the same computer and switch between them. You may run into issues if you try to use both at the same time, but as long as you quit one before using the other, you should be fine.

There is no way to install the iOS 7.0 Simulator with Xcode 7.0. The iOS 7.0 Simulator Runtime is not supported on Yosemite and newer host OS versions, and Xcode 7.0 is only supported on Yosemite and later. You will need to use a Mavericks host OS in order to use the iOS 7.0 Simulator Runtime. If you would be satisfied with the iOS 7.1 Simulator Runtime, that is still supported on Yosemite (but not El Capitan) when using Xcode 6.x (but not Xcode 7.0).

In regards to opening your project in different Xcode versions, there shouldn't be any problems like that.