Acer Liquid Z220, Z520 expands the budget range

Acer has been known to put out very affordable mobile devices in the market and it is doing so again today at MWC 2015. Joining the company's growing army of budget smartphones are the Liquid Z220 and the Liquid Z520. Flaunting a strange yet unique textured back cover, the Liquid Z220 is designed to appeal even to both ends of …