an 850 MHz version for the North American market. The next model in the 623x series is the 3G GSM/WCDMA Nokia 6233. Appearance The graphical user interface was overhauled, and many of the icons featured on the 6230i are the same as those now used uniformly across almost all new Nokia phones. Notably, the menu icons on the Nokia 6230i are animated, as opposed to the previous model which were static. The phone has seven built-in themes ('Basic', 'Circle', 'DotSpace', 'Dots2', 'Microdots', 'Waves', and 'Window'), and users can download more. In addition, users may customise the color of the borders, and the battery and signal bars. The operating system does run more slowly than on the 6230, possibly due to the increased processor drain of the higher resolution screen. Nokia also removed several options from menus, such as: brightness control, and the ability to automatically overwrite text messages in the Inbox/Sent Folders. These changes have brought widespread complaints. Security The phone can automatically lock after a set time, starting from five seconds of no activity. In addition to the auto-lock, users can lock with a 'keyguard', which prevents unauthorised use of the phone. The code it uses is the standard security code. If the user gets this code wrong five times, the phone is 'locked out', whereby no-one can gain access for five minutes. Users can choose to protect their phone by enabling a PIN. When enabled, the phone will prompt users to type the PIN, and on success the phone will grant access. Users can also protect their SIM card, which is standard phone practice. Organization The Nokia 6230i has organizing software, such as: calendar, alarm clock, to-do list, notes, wallet. The 'Wallet' is a password protected area where users can store bank card details, tickets, receipts, and personal notes. Users can set different profiles within the 'Wallet', for example 'work' or 'personal', whereby different card details, for example, can be stored. There is an e-mail application, but it must be set up by the user's mobile phone network. Phone book Further to storing mobile numbers, users can add e-mail addresses, home-phone numbers, an image (shows when contact calls), PTT addresses, postal addresses, web addresses, notes, and user identification. Contacts can be put into groups, for example 'work colleagues' but such groups do not appear to be usable for text messaging. There is a Distribution List feature under Messages