What's more, like the X960 that we looked at last week the M900 also suffers from a plasticky build quality. Although the sliding mechanism for the keyboard feels sturdy, the rest of the chassis is mostly made from plastic which creaks and bends more than it should when you apply pressure. It certainly doesn't make you over confident that it will stand up to the bumps and scrapes that any smartphone is likely to experience through the working day.
One neat feature of the phone is the fingerprint scanner that's nestled below the screen. You can set this up so you have to scan your fingerprint to gain access to the device either when it's initially tuned on or after it's gone into standby mode. You can also set up a fingerprint protected private folder and use it to protect PIM data held in the Calendar, Contacts Book and Inbox. As well as this, the scanner also doubles as a d-pad control or scroll wheel if you can't be bothered to use the touchscreen for navigation.
As with Acer's other smartphones, the M900 uses a Samsung S3C 6410 processor clocked at 522MHz. This is backed by 128MB of RAM, which is a bit stingy by today's standards. The Touch Pro2, for example, has 288MB of RAM - more than double what's on offer here. It also means there's some noticeable slow down when switching between several heftier applications.
Nevertheless, connectivity is good with quad-band GSM support alongside HSDPA and Wi-Fi for fast web browsing on the move. Naturally there's also Bluetooth for use with car kits or stereo headsets and as with most of today's smartphones it also has GPS onboard. It uses the SiRF Star III chip for GPS so it's pretty speedy at picking up your location from a cold start.
On the rear you'll find a decent 5.0-megapixel camera with autofocus and an LED flash. Pictures taken outdoors or in good indoor lighting conditions look pretty good, but despite the presence of an LED flash, darker indoor shots don't look too hot. There's also a VGA camera on the front so you can use it to make video calls over 3G or for video conferencing in applications like Skype.