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Posts: 18
Registered: ‎10-31-2011
My Device: 8900
My Carrier: BAS
Accepted Solution

Connection fails without WIFI



I could successfully connect to the server and get data when there is WIFI. But when wifi is not available it fails. Using


ConnectionFactory factory = new ConnectionFactory();
factory.setPreferredTransportTypes(new int[]{

ConnectionDescriptor conDescriptor  = factory.getConnection("url");
int test5= conDescriptor.getTransportDescriptor().getTransportType();
int[] test =TransportInfo.getAvailableTransportTypes();
boolean test1 = TransportInfo.hasSufficientCoverage(6);
boolean test2 = TransportInfo.hasSufficientCoverage(1);
boolean test3 = TransportInfo.isTransportTypeAvailable(1);
String t = (TransportInfo.getTransportTypeName(1));


When I debug Test1 = false but test2 and test3 both returns true. Still the conDescriptor is null



Please help,



Posts: 2,559
Registered: ‎10-16-2009
My Device: BlackBerry Z10
My Carrier: Bell

Re: Connection fails without WIFI

Hi Janaka,


Did you set the APN for the TCP Cellular connection? 
ConnectionFactory#setTransportTypeOptions(int transPortType, TcpCellularOptions) 


If not already set on your device, this would be required to make the connection for most carriers.



Goodbye everybody!
Posts: 18
Registered: ‎10-31-2011
My Device: 8900
My Carrier: BAS

Re: Connection fails without WIFI

Hi Garett,

Thank you very much for your response. Yes it was APN issue. Working fine now.