Restart your device. Once it has restarted, test to see whether you can now send and receive email. If you cannot, continue troubleshooting. If you are unable to register the handheld or connect to the network, or do not have the correct options displayed in the "Roaming" or "Status" fields, contact your service provider.
If these settings are all correct, and you are able to register your BlackBerry, continue troubleshooting. Remove the device battery for about five minutes to ensure a complete disconnect from the BlackBerry network. This causes a hard reset, forcing the network to register the device as a new device on the network. This is a common fix for coverage areas in which you normally have a connection and can send and receive email, but are now having trouble see the charts above to determine coverage areas.
Open Desktop Manager and double-click Redirector Settings. Make sure Redirect incoming messages to your handheld is checked. For mail messages to be received, the Inbox folder must have a checkmark next to it.
Sent Items is checked by default and will not affect mail delivery. If your device is still not able to send or receive email, contact the Support Center or your BlackBerry provider.
At this point, I would suggest contacting your service provider for further investigation with this issue. In order to send and receive data, you should have a signal strength greater than dBm ideal signal is dBm to dBm.
If you have a signal strength that is less than dBm, you are in a poor coverage area and may have trouble sending and receiving data. To view your signal strength, complete the following steps. There are two types of email accounts you might have on your BlackBerry smartphone. To see if you have any email accounts integrated with BlackBerry Internet Service, complete the following steps.
If the email account you are having troubles with is listed here, complete the steps below to resend your BlackBerry Internet Service books which may help restore functionality. Contact your wireless service provider for more information. If Service Books cannot be sent successfully, we would recommend you contact your service provider to ensure your data plan is enabled correctly — or you can tweet BlackBerryHelp for more help!
If you determine that you are using a BlackBerry Enterprise Server and are having issues sending or receiving email using your BlackBerry Enterprise Server email account, we suggest checking if any of your colleagues are encountering a similar issue. If not, contact your BlackBerry administrator for further assistance. Yahoo questions? Sign up here. Make sure your Yahoo account works Use a desktop web browser and sign in to your account. Power cycle the phone Power cycling the phone will refresh the active memory for the apps on the device.
Turn off your phone. Remove the battery, if applicable. Plug the battery back in and reboot the phone.
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