OS	Microsoft Windows Phone 8.1, upgradable to Windows 10 Mobile (Live Tiles Metro UI, Cortana Voice Assistant & OneDrive Cloud Sync!)
Chipset	Qualcomm Snapdragon 200 MSM8210 (28 nm 1.2GHz Dual-Core 32-bit Cortex-A7 Processor with Adreno 302 GPU @ 400MHz)
RAM	512MB RAM / 1GB RAM (Plus Edition)
Storage	4GB / 8GB
Display	4.0 inches • 480 x 800 pixels (5:3, Compact 4.0" WVGA 480p 5:3 TFT LCD Display, 233 ppi)
Main camera	Pro 5.0 MP Rear Camera with Autofocus, 89° Wide-Angle Lens, LED flash & 720p HD Video: 5.0 MP f/2.4 89° wide-angle (autofocus in 0.2s!, 720p@30fps HD video recording) with High-Power LED flash
Selfie camera	Pro Flagship 2.0 MP Front Camera with Skype HD & 720p Video (2.0 MP, 720p video for Skype calls)
Battery	Monumental 1300 mAh Colossal Monster Battery! (Removable Li-Ion, swappable on the go! Powers over 5 hours continuous calling / 200 hours standby / 6 hours continuous video / 30 hours audio!), Micro-USB 2.0 charging + Power Saver • Removable Li-Ion 1300 mAh (swappable on the go!)
Weight	119 g (4.20 oz)

Latest Acer Liquid M220 user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Windows Phone 8.1; ARM; Trident/7.0; Touch; rv:11.0; IEMobile/11.0; ACER INC.; M220) like Gecko	IE Mobile 11	Windows Phone 8Liquid M220
Mozilla/5.0 (Mobile; Windows Phone 8.1; Android 4.0; ARM; Trident/7.0; Touch; rv:11.0; IEMobile/11.0; ACER INC.; M220) like iPhone OS 7_0_3 Mac OS X AppleWebKit/537 (KHTML, like Gecko) Mobile Safari/537	IE Mobile 11	Windows Phone 8Liquid M220
Mozilla/5.0 (compatible; MSIE 10.0; Windows Phone 8.0; Trident/6.0; IEMobile/10.0; ARM; Touch; ACER INC.; M220)	IE Mobile 10	Windows Phone 8Liquid M220