<div>
I'm not sure if this is what you're looking for, but you can go to the BlackBerry® Internet Service website, on the Settings webpage, click Email Accounts. Under an email address, click Edit.<br />
In the Your name field, type a display name.<br />
Click Save.<br />
<br />
This link will give you a couple other methods:<br />
<a href="http://docs.blackberry.com/en/smartphone_users/deliverables/20287/Specify_display_name_merged_1001001_11.jsp" rel="ugc">http://docs.blackberry.com/en/smartphone_users/deliverables/20287/Specify_display_name_merged_1001001_11.jsp</a>
</div>


I'm not sure if this is what you're looking for, but you can go to the BlackBerry® Internet Service website, on the Settings webpage, click Email Accounts. Under an email address, click Edit.
In the Your name field, type a display name.
Click Save.

This link will give you a couple other methods:
http://docs.blackberry.com/en/smartphone_users/deliverables/20287/Specify_display_name_merged_1001001_11.jsp [http://docs.blackberry.com/en/smartphone_users/deliverables/20287/Specify_display_name_merged_1001001_11.jsp]

<div>
I'm looking directly from blackberry device.. 
</div>


I'm looking directly from blackberry device..

<div>
From a <b>Compose Email</b> while in <b>Messages</b>, you can scroll up to the <b>Send Using:</b> button and then change <b>Default </b>to any other configured email address (account) on the device.
</div>


From a Compose Email while in Messages, you can scroll up to the Send Using: button and then change Default to any other configured email address (account) on the device.

<div>
What exactly is the change you want to make to the From field? Do you need to change the address?
</div>


What exactly is the change you want to make to the From field? Do you need to change the address?

<div>
yes change the address just like in outlook.
</div>


yes change the address just like in outlook.

<div>
<div class="content wysiwyg-content">
Is there a way to modify From field in Blackberry device? &nbsp;<br />
<br />
Thanks.
</div>
</div>


Is there a way to modify From field in Blackberry device?  

Thanks.

From field in Blackberry

The BlackBerry operating system is proprietary; releases beginning with BlackBerry 10 include support for applications written for the Android platform. As such, developers can use almost any programming language that can be used for other smartphones, including Java, Adobe Air, .NET and HTML5/JS (via an app packaging framework like PhoneGap) .

BlackBerry Programming

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.