To Activate 4G , 3G on your Roshan Mobile follow the below procedure
3G Activation Code
Text 3G to 555 and restart your Mobile phone
Automatic Internet Settings Code
SMS ‘GPRS ON’ to 167.
To receive the settings automatically Send your phone model number to 167
If you don’t know your phone model, you can send the first 8 digits of your IMEI to 176