Series 40 device characteristics

Series 40 is a size- and cost-driven UI platform for the mass market. A wide range of devices incorporating the Series 40 platform are available for all the major wireless standards. Information about devices available can be found on the Forum Nokia web site by following the links from the Series 40 platform section or from the Forum Nokia Device Specifications area.

In Nokia Series 40 devices, applications can be saved either in the device memory or on a removable memory card (if one is available in the device).

The following figure presents an example Series 40 device:

Figure: Series 40 device: Nokia 6280

Display

Supported display resolutions in Series 40 are:

  • 128 x 128

  • 128 x 160

  • 208 x 208 (Only in a few Series 40 2nd Edition and Series 40 3rd Edition devices)

  • 240 x 320 (From Series 40 3rd Edition onwards)

  • 320 x 480 (From Series 40 6th Edition onwards)

The minimum supported color depth is 16-bit. Current devices may feature color depths up to 24-bit.

Series 40 UI is not scalable between landscape and portrait orientations, but can be scaled between different sized resolutions. For more information, see section Scalability.

Input

All Series 40 devices include the following input keys:

  • Two softkeys (SK1 and SK2)

  • Five-way navigation (four arrows and a Selection key)

  • Call creation and termination keys (Send and End keys)

  • Alpha-numeric keyboard with digits from 0 to 9 and symbols * and #

  • (Power key) is also supported but some older Series 40 devices use the End key as a power key

The Series 40 platform also supports extra keys from 3rd Edition onwards. These are:

  • Camera key (not featured in all devices)

  • Push-to talk key (not featured in all devices)

  • Volume keys

For more information, see Series 40 UI style guide.

Memory

The Nokia Series 40 devices handle memory allocation by using static fixed heap memory for Java. The heap size can be up to 2MB, but in some low end devices it is up to 512KB.

The Nokia Series 40 devices support a maximum JAR size of up to 1MB. For detailed information about each device, see the Device Specification section on Forum Nokia.

Note: There might also be device-specific maximum download sizes, which define the maximum size of content allowed to be downloaded to the device. In many products the maximum download size (for any content) is smaller than the maximum allowed application size. This means that it may be possible to install applications via PC suite, for example, where they could not be downloaded over the air.

© Nokia 2009.