NetworkMode: QNetworkInfo::WlanMode
  networkinfo.currentNetworkMode() -> 0

That means UnknownMode, even when connected, which is probably the issue.

The output when I have ofono running:

phablet@ubuntu-phablet:~/qt/qtsystems-opensource-src-5.0~git20130712/tests/manual/sysinfo-tester$ ./sysinfo_tester networkinfo
$DISPLAY not set, assuming :0 
 
----( networkinfo )---- 
 
networkinfo.cellId(0) -> "12593173" 
networkinfo.currentMobileCountryCode(0) -> "724" 
networkinfo.currentMobileNetworkCode(0) -> "03" 
networkinfo.homeMobileCountryCode(0) -> "724" 
networkinfo.homeMobileNetworkCode(0) -> "03" 
networkinfo.locationAreaCode(0) -> "50219" 
networkinfo.currentCellDataTechnology(0) -> 3 
 
NetworkMode: QNetworkInfo::UnknownMode 
  networkinfo.currentNetworkMode() -> 8 
  networkinfo.networkInterfaceCount() -> -1 
 
NetworkMode: QNetworkInfo::GsmMode 
  networkinfo.currentNetworkMode() -> 8 
  networkinfo.networkInterfaceCount() -> 1 
  networkinfo.interfaceForMode() -> QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
  networkinfo.macAddress() -> "" 
  networkinfo.networkStatus() -> 6 
  networkinfo.networkName() -> "TIM" 
  networkinfo.networkSignalStrength() -> 61 
 
NetworkMode: QNetworkInfo::CdmaMode 
  networkinfo.currentNetworkMode() -> 8 
  networkinfo.networkInterfaceCount() -> 1 
  networkinfo.interfaceForMode() -> QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
  networkinfo.macAddress() -> "" 
  networkinfo.networkStatus() -> 6 
  networkinfo.networkName() -> "TIM" 
  networkinfo.networkSignalStrength() -> 61 
 
NetworkMode: QNetworkInfo::WcdmaMode 
  networkinfo.currentNetworkMode() -> 8 
  networkinfo.networkInterfaceCount() -> 1 
  networkinfo.interfaceForMode() -> QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
  networkinfo.macAddress() -> "" 
  networkinfo.networkStatus() -> 6 
  networkinfo.networkName() -> "TIM" 
  networkinfo.networkSignalStrength() -> 61 
 
NetworkMode: QNetworkInfo::WlanMode 
  networkinfo.currentNetworkMode() -> 8 
  networkinfo.networkInterfaceCount() -> 1 
  networkinfo.interfaceForMode() -> QNetworkInterface(name = "wlan0", hardware address = "10:68:3F:FE:09:8F", flags = IsUp IsRunning CanBroadcast CanMulticast , entries = ((address = QHostAddress("192.168.2.61") , netmask = QHostAddress("255.255.255.0") , broadcast = QHostAddress("192.168.2.255") ) ,  (address = QHostAddress("fe80::1268:3fff:fefe:98f%wlan0") , netmask = QHostAddress("ffff:ffff:ffff:ffff::") ) )  )
  
  networkinfo.macAddress() -> "10:68:3f:fe:09:8f" 
  networkinfo.networkStatus() -> 1 
  networkinfo.networkName() -> "sheevanetN" 
  networkinfo.networkSignalStrength() -> -1 
 
NetworkMode: QNetworkInfo::EthernetMode 
  networkinfo.currentNetworkMode() -> 8 
  networkinfo.networkInterfaceCount() -> 0 
 
NetworkMode: QNetworkInfo::BluetoothMode 
  networkinfo.currentNetworkMode() -> 8 
  networkinfo.networkInterfaceCount() -> -1 
 
NetworkMode: QNetworkInfo::WimaxMode 
  networkinfo.currentNetworkMode() -> 8 
  networkinfo.networkInterfaceCount() -> -1 
 
NetworkMode: QNetworkInfo::LteMode 
  networkinfo.currentNetworkMode() -> 8 
  networkinfo.networkInterfaceCount() -> 1 
  networkinfo.interfaceForMode() -> QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
  networkinfo.macAddress() -> "" 
  networkinfo.networkStatus() -> 6 
  networkinfo.networkName() -> "TIM" 
  networkinfo.networkSignalStrength() -> 61 
 
NetworkMode: QNetworkInfo::TdscdmaMode 
  networkinfo.currentNetworkMode() -> 8 
  networkinfo.networkInterfaceCount() -> 1 
  networkinfo.interfaceForMode() -> QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
  networkinfo.macAddress() -> "" 
  networkinfo.networkStatus() -> 6 
  networkinfo.networkName() -> "TIM" 
  networkinfo.networkSignalStrength() -> 61