Mobile phones are equipped with a quite detailed phonebook. The available information fields usually cover all the customary PIM requirements. Most of the times users can even add custom fields when the default options are insufficient. Computer synchronization with a PIM application is quite important and most recent mobile phones offer synchronization with Microsoft Outlook or through a proprietary sync application. Whenever possible we will try and list the contact capacity for each mobile phone in our database as accurately as possible. Bear in mind that the number of entry fields listed concerns only the handset memory, SIM cards will usually offer an additional capacity of about 200-250 contacts.