Hello!

My name is Hugo, its been 3 days now since my nokia lumia 520 has not been able to refresh my instagram (6 tag) page, browse cortana and UC browser and it is unable to connect to the store. but weirdly enough i am able to receive messages through whatsapp but that only if i open the application and operamini is working but with difficulties. what might be the problem since my service provider have reset my sim card. please any help would be appreciated thanks in anticipation.