The Ins and Outs of PC Audio Jack Colors. In many cards, the microphone connector will be pink, the line out or headphone will. be lime green, and the stereo line in will be light blue. Additional jacks may be present. on newer soundcards for rear and mid surround speakers. There is a widely accepted color standard for computer sound card input and output.
If one of the key features of Wi-Fi calling is that you can start/receive a call while on Wi-Fi and it will hand off to the cell network in a seamless fashion, that might not be true for some iPhone 5 users on T-Mobile.
Voice & Video Calls with Skype for iPhone: An internet connection is required to make any type of call with Skype for iPhone. You can make a Video or voice call with Skype using your iPhone to computer method. You can also make an iPhone to land line phone call using Skype Out.dding SkypeOut Credit: If you tap the My Info button at the bottom, and then tap the Skype Credit button, you will get a screen showing you how much credit you have. To add credit, go to Skype.com on your desktop computer, or on your iPhone safari and click  Buy Credit .