Review: Microsoft Lumia 550

Introduction and featuresThe Christmas period wasn't kind to Windows 10 Mobile. With the Lumia 950 and 950 XL being the first flagship smartphones to come bearing the new operating system, they also came bearing the weight of expectation.Unfortunately, despite significant efforts on the part of Microsoft, their arrival was heralded by persistent software bugs and lukewarm reviews.Things have gone rather more smoothly, however, for the Lumia 550, the budget entry in the Windows 10 Mobile lineup.W