Sony Ericsson P900

The Sony Ericsson P900 is a Symbian OS v7.0 based smartphone from Sony Ericsson.

It was introduced in 2003 and is the successor of the Sony Ericsson P800, and, like the P800 uses the UIQ platform.

Like other Symbian-based smartphones, the P900 is an open phone, which means that it is possible to develop and install third party applications without restrictions. A UIQ 2.1 SDK based upon Symbian C++ is freely available from the Sony Ericsson developer website [1]. Additionally, the P900 supports applications written in Java.

Because of this openness, a great number of third-party applications exist that can be used on the P900 and other UIQ phones (such as the Motorola A1000 and BenQ P30). Many are shareware and freeware.

As the P900 uses UIQ version 2.1 it is backwards compatible with UIQ 2.0 as found in the P800. Applications made for the P800 will normally work on a P900 as well. It, like the P800 and P910i, has an ARM9 processor clocked at 156MHz.

The P900 can be used without the flip as well, acting more like a PDA, but still usable as a phone. The P900 supports Memory Stick Duo cards (but not Memory Stick Pro Duo) up to 128MB in size, as does the P800. However, it has been confirmed that this 128MB limit is just a software restriction.

An updated version of the P900, the Sony Ericsson P910i was released in July 2004. It features a small QWERTY keyboard and enhanced software, but was reported to be less battery-efficient. The P910i has double the P900's memory (64 MB, versus the P900's 32 MB) and supports Memory Stick Pro Duo, allowing the phone up to 4 GB of storage on a single card.

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