Camera phones: Almost standard these days on anything accept the most basic handsets, the digital cameras in phones have a smaller number of mega pixels available than most digital cameras, typically 0.3 rather than the 3.0 common in dedicated digital cameras.

GPRS: General Packet Radio System is the means by which second generation or 2G mobile phones can connect to the Internet. A GPRS enabled phone can collect e-mail and view WAP pages.

GSM: The Global System for Mobile Communications uses three frequencies for phones, 900MHz, 1800MHz and 1900 MHz. A dual-band phone will work on two out of three frequencies (900MHz and 1900MHz). A tri-band phone will operate on all three frequencies and therefore, in theory, will work anywhere in the world.

Bluetooth: This is a technology that enables electronic devices to communicate with each other without being physically connected. Bluetooth equipped phones can be used via a wireless headset and can connect to PCs wirelessly to transmit information.

Games: If you are going to be using your phone for gaming then a Java-enabled phone will give you the widest choice from games developers.

Ringbones: Part of the fashion element of the mobile phone, polyphonic ringtones can be downloaded straight to your phone and even linked to specific callers.

Radio/MP3: Many models have a built-in FM radio and/or an MP3 player which you can listen to using a headset.

WAP: WAP pages, essentially web pages adapted for the smaller screen, are now accessed by mobile phone users to get the latest information on a range of topics from results to shopping.

Porting authorisation code (PAC): If you are switching networks and want to keep your current number then you will need a PAC from your existing provider which you give to the new provider. Tariff changes and upgrades with the same provider usually mean you can keep your old number.

Accessories

• Headset: Using Bluetooth technology to communicate with the handset, a headset can be a convenient way of using the phone. And while the debate on the long-term effects of heavy phone usage continues a headset is a sensible option for people likely to be on the phone all day..
   
• Car kits: Some mobiles can be plugged into a car kit to utilize the car's battery power, a speaker and an aerial to give better sound and reception. Other car kits have just a charger and a hands-free kit.
   
• Speakers: Ideal for use in the car or the office a separate speaker will give you improved sound quality.
   
• Insurance: Mobile phone theft is a problem and insurance premiums are correspondingly high. In financial terms you probably only need it if you have bought your handset separately rather than as part of a contract. Whether you choose to take out a policy or not, keep a record of your phone's 15-digit IMEI number to use if you have to report a phone as stolen.