What devices are affected by Daylight Saving Time (DST) changes?
The Energy Policy Act of 2005 mandates Daylight Saving Time (DST) take place on a new schedule beginning the second Sunday in March 2007 and ending the first Sunday in November. This year, the dates are March 11 and November 4. DST takes place three weeks earlier in the spring, and one week later in the fall.
Most mobile devices automatically convert the time when DST takes effect; but some, unless upgraded, could display the wrong time or improperly timestamp calendar appointments, because they are not programmed to use the new DST start and end dates. This incorrect time display could take place both in the spring “spring forward” and the autumn “fall back” timeframes.
The changes required to update the new DST vary for each device. Please see the information below to learn how to update your device.
BlackBerry® customers that are on a BlackBerry® Enterprise Server (BES) or Corporate e-mail solution will likely be upgraded by their BES Administrator. Customers should contact their BES Administrator with questions. BES Administrators can get more information on Daylight Saving Time 2007 and the impact it will have, at Daylight Saving Time 2007.
NOTE: Only devices affected by the change in Daylight Saving Time are listed. If your phone or device is not listed, it should not be affected by this change.
Please use the links below to locate information about your device type:
Affected BlackBerry® handhelds ›
Affected BlackBerry® Connect devices ›
Affected Windows Mobile devices ›
Affected PalmOne devices ›
Affected BlackBerry® Connect devices ›
Affected Windows Mobile devices ›
Affected PalmOne devices ›
Affected BlackBerry® handhelds
NOTE: BlackBerry 8800™, Curve™ (8320™), and Pearl™ (8100™) Sapphire, Ruby, and Gold are not affected by the DST changes.
If you own one of the following BlackBerry® models, T-Mobile provides an updated version of the device software. The updated version will ensure your device is not affected by the DST change. Please download the software update from: BlackBerry Software Update. NOTE: Use the Do I need this software? link on the BlackBerry Software Update page to determine if you already have the latest version of the BlackBerry® handheld software installed on your device. OR If you do not have a computer, you may download a patch directly from your handheld using the following steps: NOTE: During installation, a reset may be required and it will usually take 15 to 20 minutes.
NOTE: During the installation, the handheld may display a moving hourglass.
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 |  |  |  NOTE: Sapphire, Ruby, and Gold versions are unaffected. |  |  | ||||||
NOTE: If you do not have one of the models listed above, please see the instructions below.
To check the handheld model and software version of a BlackBerry®, perform the following steps:
| 1. | At main menu, select Options. |
| 2. | Select About. |
NOTE: If you have changed your theme, you may need to select Settings, select Options, and then select About.
The first line provides the handheld model. The third line provides the current software version.
If you have a Blackberry device without a Blackberry plan (and you are unable to utilize the browser), you can manually change the time on your device or apply the patch to your device using a computer as directed in the table below. To change the time on your device, go to Options > Date/Time.
For answers to popular questions regarding this update for BlackBerry® handhelds, go to Daylight Saving Time (DST) FAQs (BlackBerry®).
Please use the table below to locate instructions relevant to your handheld model.
Handheld Model | Software Version | Recommended Steps |
 BlackBerry 5810™ | v 3.6.0.38 or higher (Includes v 4.x) If you need to update the software on your device, visit www.t-mobile.com/bbupgrade. | Using the BlackBerry® Browser, visit www.blackberry.com/dst2007/ to download and install the update directly to the handheld.
NOTE: Devices with software versions older than v3.8.0 are not able to download the patch using the Blackberry® Browser method. These devices can only download the patch via the USB download method. OR Using a computer, go to Daylight Saving Time 2007. Click DST2007 Patch download page, and then follow the on-screen instructions to download and install the update. |
 BlackBerry 6210™ | ||
 BlackBerry 6230™ | ||
 BlackBerry 6710™ | ||
 BlackBerry 7230™ | ||
 BlackBerry 7730™ | ||
 BlackBerry 5810™ | v 3.6.0.37 or lower | To upgrade your handheld software to version 3.6.0.38 or higher, go to BlackBerry Upgrade. Using a computer, go to Daylight Saving Time 2007. Click DST2007 Patch download page, and then follow the on-screen instructions to download and install the update. |
 BlackBerry 6210™ |
Affected BlackBerry® Connect devices
Please use the table below to locate instructions relevant to your device model.
Device Model | Software Version | Recommended Steps |
 Samsung t719 | N/A | No update is needed. Your phone supports the new Daylight Saving Time changes. |
Affected Windows Mobile devices
Please use the table below to locate instructions relevant to your device model.
Device Model | Software Version | Recommended Steps |
 T-Mobile Dash | Windows Mobile 5 (v3.x) | No update is needed. Your phone is already configured to support the new Daylight Saving Time changes. |
 T-Mobile MDA® | Windows Mobile 5 (v2.x) | From your PC: Go to www.microsoft.com/windowsmobile/daylightsaving/default.mspx using a computer that is connected to your device with a USB cable. Follow the on-screen instructions to download and install the update. From your phone: Select Windows Mobile (http://www.microsoft.com/windowsmobile) from your list of favorites. Follow the on-screen instructions to download and install the update. |
 T-Mobile SDA™ | ||
 HP iPAQ h6315 | Microsoft Pocket PC 2003 | From your PC: Go to www.microsoft.com/windowsmobile/daylightsaving/default.mspx using a computer that is connected to your device with a USB cable. Follow the on-screen instructions to download and install the update. From your phone: Select Windows Mobile (http://www.microsoft.com/windowsmobile) from your list of favorites. Follow the on-screen instructions to download and install the update. |
 Pocket PC Phone Edition 2003 | ||
 Pocket PC Phone Edition | Microsoft Pocket PC 2002 | Your device is not able to download the DST2007 patch; two options are available:
|
Affected PalmOne Devices
Please use the table below to locate instructions relevant to your device model.
Device Model | Software Version | Recommended Steps |
 Treo 600 | From your PC: Go to http://www.palm.com/us/support/downloads/dst.html using a computer that is connected to your device. Follow the on-screen instructions to download and install the update. |
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