I'm considering switching over to Windows Phone, specifically WP 8.1. However, I was wondering - does Line support voice and video calls? I want to be sure before making the switch.
Line does support Voice Calls for Windows Phone. But it does not support video calls unlike other OS i.e., Android or iOS.
You can have a look at the screenshot taken from Line's Official website
As of version 3.9 (released on 19.01.2015), LINE supports video calling on Windows Phone 8.0 and 8.1.
From the Store description (emphasis mine):
[Update - Ver. 3.9.0]
- Video calling feature supported (OS 8.0, 8.1)
- Addded Italian language support.
- Bug fixes and performance improvements
Source: Windows Central