Your phone is losing value – should you upgrade this Black Friday?

With this year's Black Friday phone deals fast encroaching, many of us are eying up that crucial yearly or bi-yearly upgrade this November. Trading in, no doubt, is going to be the best, and in some cases, the only way to get yourself a reasonable discount on an otherwise pricey device.

We don't expect that to be any different this year. What is different, however, are massive backorder queues that several flagship devices are . . .