this phone is bit large because it has 3.8 inch large touch screen. the UI of this phone is widget based. that means, you can insert any widget to F900's interface,touch them to active. the touchscreen also supports Handwriting recognition feature.
Acer F900 runs with Microsoft Windows Mobile 6.1 Professional OS. it have very powerful hardware to run this OS properly. processor is Samsung S3C 6410 533 MHz and RAM is 256Mb. the internal memory of this phone is 250Mb and it supports up to 16GB micro SD memory cards.
F900 allows 7.2Mbps HSDPA connectivity and 2Mbps HSUPA connectivity. also it has wi-fi and bluetooth.
Acer F900 has mini USB port and 3.5mm audio jack. the main camera is 3.15Mp and it comes with a LED flash. it has full featured GPS receiver with A-GPS support. F900 has many office features. the pocket office application allows you to open and edit Word, Excel, PowerPoint, OneNote and PDF files.