Mid-range is the new high-end. Their cameras are already better than the knackered old Canon in the cupboard and you'll often be hard-pressed to notice the difference between a mid-level phone and a top-end one in day-to-day use.At $279 (£229, AU$389) the Sony Xperia XA is the most accessible phone in the X-series line-up. The Xperia X is $549.99 (£400)...