Nokia E66

The Nokia E66 is a slider smartphone in the Nokia Eseries range, a S60 platform third edition device with slide action targeting business users. It is a successor to the Nokia E65 with which it shares many features.
E66 has similar features to the Nokia E71 handset, but lacks sufficient battery capacity for all day use and does not have the full QWERTY, however the E66 is smaller in size and weighs less. The E66 also includes an accelerometer and new animations and transition effects, which are lacking in the E71.
Features.
The 2.5 mm (3/32") audio port is not suitable for traditional 3.5 mm (1/8") headphones plugs.
The microUSB port cannot be used to charge the mobile.
Firmware history.
Dial *#0000# to Check firmware version