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.
Re: Can't make/receive calls on Galaxy S5. Not sure if you ever resolved your issue but I had a similar issue. FreedomPop (it's a VOIP app) updated and was trying to take over my default dialer.e: Can't make/receive calls on Galaxy S5. I had a similar problem today. No signal bar and could not dial out. Airplane and block modes showed off. For no reason, I decided to turn the airplane mode on and the off again and bingo, it started working. Bugs.