The screen is a little disappointing, but that’s probably because we’ve been spoiled by the more expensive Xperia models.
If anything it’s just a tad too big, and it’s not often you say that about a phone. However, the fairly low pixel count does start to become evident on a 4.8” screen it would’ve probably fared better if it was a little smaller. Having said that, it very much depends on your needs.
The basic VGA front camera is quite underwhelming. It does at least give you video-calling functionality, but the quality isn’t great. That also means it’s not great for taking actual pictures with, and in today’s selfie-obsessed world it puts the M2 at a bit of a disadvantage compared to its rivals.