Apple Mach-O Linker Errors (20) - Undefined symbols for architecture armv7?

Can you check out in your target->Build Phase. Whether these files exist there or not? And if you are running for simulator then first you need to make a build for simulator of that library whatever I guess you are using SRWebSocket library.

Just open that project and just make a build for simulator and copy the files from build folder and then add to your project and do the same for the device if you are running your app on device.

Check to make sure you included the following frameworks (via github.com/square/SocketRocket).

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