Ulefone has introduced Vienna, the company’s latest budget 4G smartphone. It packs a 5.5-inch 1080p 2.5D curved glass display from Sharp, is powered by a Octa-Core 64-bit MediaTek MT6753 processor, runs on Android 5.1 (Lollipop), has a 13-megapixel rear camera with dual LED flash, 5-megapixel front-facing camera and a fingerprint sensor on the back that can unlock the phone in less than 0.5 seconds.