Searching for Network Manually for Blackberry (Manual Roam)

1. On the Home screen, click the Manage Connections icon.
2. Click Mobile Network Options.
3. Change the Network Selection Mode field to Manual.
4. Click Scan for Available Networks.
5. Click a wireless network.
6. Click Select Network.
7. Press the Menu key.
8. Click Save.

In order to connect to your mobile network automatically, change the Network Selection Mode field to Automatic

 

Note: You can perform the above steps in case you lost signal on your phone suddenly (ex. while roaming). This helps your phone find network manually.