When Sony debuted the Live on YouTube app last month, we wondered if compatibility would extend backwards to some other high-end Sony phones. The time is now, Sony smartphone owners... at least if you own one of three very specific models. Last year's flagship the Xperia Z1, its slightly smaller brother the Xperia Z1 Compact, and the high-powered Xperia ZL2 (which is only available in some Asian markets at the moment), all have access to the app as of now.

Wait, where exactly is the phone in this situation? Up a tree?

The Live On YouTube app is, so far, the only straightforward way to stream from Android directly to a live stream on YouTube. To use it you'll have to enable LIVE in your YouTube settings panel, and there are some fairly obvious restrictions, like not streaming live movies or concerts. Basically, anything you're likely to get flagged for with a pre-recorded video isn't allowed. On the plus side, the app allows you to switch between front-facing and rear cameras, and you can see how many people are watching at any moment, along with the likes and dislikes.

We can't tell if the T-Mobile variant Xperia Z1S has access to Live On YouTube - carrier-modified phones sometimes fall through the cracks. If anyone can try it out, drop us a line in the comments.