Review: Updated: Microsoft Lumia 640 XL

IntroductionWhile we wait for Windows 10 Mobile to show up later this year here's another affordable, decent-looking, unfussy Windows Phone 8.1 model to tide us over. Since Microsoft bought Nokia's phone division at the end of 2013, we've seen quite a few perfectly adequate handsets that aren't going to burn too big a hole in your pocket or get your pulse racing all that quickly.And so to the Microsoft Lumia 640 XL, the bigger brother to the Lumia 640, which was also announced at MWC 2015. Overa