I got a strange problem! My broadband dongle is not being detected on my Dell 5220 laptop after I updated to Ubuntu 13.04. Previously it was working fine in 12.10.
found a solution ,
installed this on my laptop. now i can connect via this application pretty cool.
If above link is not working, Google for Mobile Partner Linux (BAM Huawei) 21.003.28.00.03 and get download and install
this is my solution if any one have another solution please post