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• Verify that you are in a GSM or UMTS network area that is supported by your wireless service plan.
• Verify that the network that you want to connect to appears in your preferred wireless network list.
• On the home screen, click the Manage Connections icon. Click Networks and Connections > Mobile Network. If the
Network Technology field is set to GSM/UMTS, verify that the Network Mode field is set to one of the following: 2G &
3G or 2G & 3G/4G or 2G & 3G/H+. The options that appear in the Network Mode field depend on your wireless service
provider.
Error messages
Data service unavailable
Description
This message appears when you don't have access to data services on your BlackBerry smartphone.
Possible solutions
Try the following actions:
• Verify that you're in a wireless coverage area.
• Verify that the data service on your smartphone is turned on.
• If you're roaming, verify that you can access data services while you roam.
Related information
Turn on or turn off data service or set roaming options, 254
Wi-Fi technology
Depending on your BlackBerry smartphone model, the Wi-Fi feature might not be supported.
User Guide Manage Connections
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