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Operation Manual

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Troubleshooting: Mobile network
I can't connect to the mobile network
Try the following actions:
• If your BlackBerry® smartphone uses a SIM card, verify that your SIM card is inserted in your smartphone correctly.
• If your smartphone normally connects to a CDMA network and your smartphone supports international roaming, verify
that your smartphone is in global roaming mode and that your SIM card is inserted in your smartphone correctly.
• Verify that you turned on the connection to the wireless network.
• Verify that you're connected to your wireless service provider's network. If you switched wireless networks manually, your
smartphone remains connected to that wireless network until you select your wireless service provider's network again.
• If you set a specific speed for wireless network connections, verify that you're in a wireless coverage area that supports the
connection speed.
Related information
Turn on or turn off a network connection, 235
Switch wireless networks manually, 236
Turn on or turn off data service or set roaming options, 236
Turn on or turn off a network connection, 235
I can't connect to a GSM or UMTS network
Try the following actions:
• Verify that your SIM card is inserted in your BlackBerry® smartphone correctly.
• 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.
Related information
Connect to a GSM or UMTS network, 236
Check what wireless networks your smartphone connects to, 234
Add a wireless network to the preferred wireless network list, 237
Error messages
Data service unavailable
Description
User Guide
Manage Connections
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