This may be out of your control if you’re a teenager in a long distance relationship, and your parents don’t want to spend on money on high speed internet or lend you the cash to get a webcam (teenagers out there reading this, if you have these things, consider yourself lucky to have supporting parents!). If however, it is within your means to have these things, do it! Your relationship will be much much much better. And I don’t know what you’ve been waiting for. You certainly won’t regret it.
A webcam allows more interaction than a phone ever could. A webcam gives you the ability to learn your partner’s body language and facial expressions. Interactions are also much more enjoyable and there is less pressure to speak when you don’t have much to say – another advantage of using a webcam versus using the phone alone.