1. Sign in to, http://www.browserstack.com
2. Click, Web tunnel.
3. Flag, Local server.
4. Input your Host and Port (i.e. 10.61.0.125 and 8888).
5. Click, Finish.

HINTS: Use Firefox or Safari as Chrome is a 32-bit browser.

1. Ensure both Macbook Pro and iPhone are on the same wireless network.
2. Verify Macbook Pro IP address, System Preferences > Network > Wi-Fi > Status (ie. 10.61.0.125).
3. Open apache httpd.conf file, Applications > MAMP > conf > apache.
4. On httpd.conf file, Command+F Listen to verify the port assigned (ie. 8888).
5. Open iPhone browser (safari/chrome, etc.).
6. Type the IP address and port assignment, 10.61.0.125:8888.

Thanks to Stackoverflow

PS: This also holds true for ANDROID phones with their respective browsers. As long as you are in the same network.

1. In terminal run this command:

   open /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Applications/iPhone\ Simulator.app

2. Once opened, right click on the app and select ‘Keep in Dock’.

Thanks to Stackoverflow