Audio

The BlackBerry 7105t lacks many of the audio features found on popular devices today, items such as built-in MP3 players or FM radios. Not surprisingly, the 7105t was created with business users in mind, so it was expected.

On the contrary, useful features such as handsfree functionality can be accessed through headphones connected to the 2.5mm audio jack, a Bluetooth wireless headset, or speakerphone grill located on the back.

Messaging

Through RIM's proprietary SureType predictive text technology, 7105t users are able type on the 20-key QWERTY keypad no differently than a full QWERTY keyboard, with only one key press for each letter.

With many keys containing two letters and a number; such as the '1' key used for letters 'E' and 'R,' distinguishing between which item is meant to be typed depends on the sequence of keys pressed. Although each key represents multiple entry possibilities, the 7105t matches combinations to a 35,000 word dictionary. Since the English language has only a finite number of acceptable arrangements, the 7105t can predict which letter is needed.

Additionally, shortcuts allow consumers to execute general functions such as opening websites and applications. For example, by typing the letters "word\" anywhere, Microsoft Word can be launched. Similarly, typing "address\" will have the full address entered on-screen. To avoid mistakenly activating it, a special expansion key is required after a word (by default, backslash) for SureType initiate.

The BlackBerry 7105t also has instant messaging platforms. With mobile versions of AOL Instant Messenger (AIM), Yahoo! Messenger, and ICQ included, users can communicate in real-time with friends and family.

Entertainment

Familiar preinstalled PIM (Personal Information Management) applications come bundled on the BlackBerry OS such as Alarm Clock, Calculator, Memo Pad and Tasks. Additional programs can be installed through J2ME (Java 2 Platform, Micro Edition), a mobile platform for Java-based software. Available through the web, an abundant supply of productivity tools and games are available, most for a small fee.

The Address Book can store up to eight phone numbers, an email address, and two postal addresses, allowing users to call, email, SMS, or schedule meetings from one centralized location. And with the Calendar, appointments can be viewed by the Day, Week, or Month, while an Agenda displays the schedule in list format.

But the 7105t's most attractive feature is its email functionality. Using the BlackBerry Internet Email, email messages can be wirelessly forwarded and retrieved every 3 to 15 minutes from up to 10 POP3 or IMAP4 accounts.

New to the 7105t, T-Mobile and RIM teamed up with Yahoo! to provide enhanced Yahoo! Mail access. As the first Internet email provider to provide integration with BlackBerry Internet Service, Yahoo! provides real-time, push-based delivery of Yahoo! Mail to T-Mobile customers. Through the service, road warriors can experience the ability to use multiple "sent from" addresses and enhanced wireless synchronization of read / unread message status, and sent and deleted items.

For corporate email, the 7105t can connect with Microsoft Exchange and Lotus Notes servers through Enterprise.

Supporting a broad range of file types, the 7105t can open and view email attachments from Microsoft Word, Excel, PowerPoint, Corel WordPerfect, Adobe PDF, Zip Archives, HTML, and ASCII documents.

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