Internet. hi sir i have samsung x600 mobile handset and i use interet on it today ihave a problem

Question

hi sir i have samsung x600 mobile handset and i use interet on it today ihave a problem that i nor use internet on it . they display that the internet service is not enabled i use airtel service and i also see the setting nad they will be ok can ahy one help me there is any code for reset the wap enable