The music player is familiar S60 – it supports MP3, WMA, AAC, AAC+, and eAAC file formats, and tracks copied or downloaded to the phone are tidily arranged under regular MP3 player categories. As well as artists, albums, playlists, all songs, genre and composer, there's a podcasts heading – a Podcasting client in the Media folder can be used to source and download these over the air. The phone also supports the Nokia Music Store download service, should you wish to buy music tracks.

With a 4GB MicroSD supplied, there's plenty of in-box storage capacity, although the phone's internal memory is a modest 50MB. A set of neck-strap equipped earphones are supplied, though they're average quality ear-wear that are serviceable but sound a bit trebly and harsh when volume's cranked up. Commendably, though, Nokia has equipped the E75 with a 3.5mm standard headphone jack, so you can easily upgrade to better headphones if you want improved sound quality.

The phone also supports a couple of radio options – a regular FM radio feature is accompanied by a very neat internet radio option, so you can easily connect and listen to numerous online stations via Wi-Fi or over an HSDPA mobile connection (watch out for potential mobile data charges, though, if you've not an inclusive data deal).

Nokia's Video Centre app provides access to compatible online video services you can stream or download onto the handset The RealPlayer app enables you to view downloaded or sideloaded video in decent quality, running smoothly, and in full screen if you hold the phone sideways.

Camerawork isn't a big priority on the E75, but it is capable of snapping acceptable quality shots with its 3.2-megapixel autofocus and LED flash-equipped camera.

The shooter fires up in 1 or 2 seconds using the shortcut icon onscreen, or around double that time via the dedicated side camera button. The autofocus system sets itself quickly and there are no shutter lag issues. Image quality is good for this grade of cameraphone, with decent colour rendition and a reasonable amount of detail in shots for such a shooter.

It has a solid selection of control options that are clearly labelled and straightforward to operate, including a variety of shooting environment optimisation controls, plus an effective close up macro mode that produces sharply focused close-in shots.

The flash does an acceptable job indoors, though it is quite limited in darker conditions. Shots can be geo-tagged – recording metadata for the location they were taken in – allowing them to be viewed with positioning info on compatible mapping apps.

Images can be uploaded directly online, via a Share online option that can be used with services such as Flickr, Vox and Nokia's own Ovi portal. Video clips too can be uploaded from the handset; the E75 shoots a cut above the average mobile fare, recording like other recent Nokia smartphones in maximum VGA (640x480 pixels) resolution at up to 30 frames per second for smooth-flowing playback.

Business users can also enjoy some quality downtime gaming, with an N-Gage gaming application pre-loaded onto the handset, enabling you to try the sophisticated games before you buy. A wide range of additional applications can be added to the handset via the embedded Download! tool which connects to Nokia's dedicated download portal.

Performance

We found voice calling quality uniformally excellent on this device, which is the sort of reliable performance you'd wish for in a business class handset. The battery life isn't bad either; Nokia estimates optimum talktime figures of up to four hours and 20 minutes on 3G networks (5 hours 20 in GSM coverage) or standby time of up to 270 hours on 3G (280 hours on GSM); alternatively, you can get up to 9 hours of VoIP calls over WLAN.

Real usage battery life will depend on how much you use various functions, make calls and manage your apps, though in our typical usage tests we comfortably managed over two days between charges.

Summary

With the E75 Nokia has delivered another finely tuned business-majoring handset. It has a strong line-up of useful features, with its discreet Qwerty keyboard slider adding to its enterprise-class messaging capabilities.

With its connectivity options, smartphone capabilities and navigation capabilities, this is one powerful device to do business with. But it also has an impressive suite of consumer-enticing features as well, for those who like a good work-life balance on their mobiles too.