Find IMEI Number
Click Below link and enter your IMEI Number Then you can get unlock code & flash code. http://a-zgsm.com/freecode/
Save Unlock code & Flash code
For Dialog
Download Huawei E153 Update Firmware
Insert other operator Sim to dongle
Run Fimware software it will ask password
Enter flash code
Now ur dongle is unlocked
For Etisalat
Insert other operator sim
it will request unlock code then enter...