The first thing you should check is whether or not you have a connection to the mobile network as well as the ability to send and receive data.
To verify the mobile network connection status on your Black Berry smartphone, tap on the Manage Connections icon that appears on your Home screen and verify if your mobile network connection is enabled.
But the truth is that the Black Berry hardware and software is elegantly designed, and troubleshooting problems is very easy -- even when those problems are with your mobile network connection.
This test will confirm if you have bi-directional data communication on your smartphone, which is required to send and receive email.
New Black Berry users may find their phone intimidating at first.
A Black Berry can appear to be complex, simply because it has so many features.
If the problem is a more complex device issue, your carrier's technical support will guide you through more in-depth troubleshooting.
This guide is for devices running Black Berry OS, if you're using a newer Black Berry smartphone which is running Android OS, check out this thread over at Android Forums.
If this test fails, you might also have issues using Black Berry® Messenger (BBM™) or the Black Berry® Browser in addition to sending and receiving email.