The Xiai Leica phone is the best and most exciting camera phone I have ever used and I've used them all. Here's what you should know and why if you're a keen photographer like I am, this really should be your next phone. The Leica Lights phone, as it's actually called, is Xiai's latest flagship phone, but this one has been made in partnership with the iconic German camera brand Leica.While you can buy the Xiai 17 Ultra in a more regular form without so much Leica branding, it's the light phone version that' ...