Past many nights, I spend playing with scripts and USB configuration to connect my ZTE data-card on Linux and results were disappointing.... But the Good News is: I finally got it work and surprisingly without working on any script.
Well solution is very very simple and here it is........
run YaST
Authenticate as root
In Network Devices select Modem
In Modem Configuraion Overview click Add
In Modem Parameters choose your modem device e.g. /dev/ttyUSB0 (already detected). Click Next
In Select Internet Service Providers Choose New
In Provider Parameters fill The followings:
Provider Name e.g. Reliance
Phone No. e.g. #777
User Name 93XXXXXXXX and Password ********** and Click Next
In Connection Parameters select Automatic Dialing and Click Next
You will be back to Modem Configuraion Overview click OK.... its done
Run qinternet from Application Browser (it comes with SUSE. if you did not install it use YaST)
In side the lower panel a "plug" like icon will appear. Click it for connecting/disconnecting.
