iphone is stuck , neither switchin off nor on..

[swishrick18]

i have a factory unlocked iphone , its just 2 days old. i was switchin it off today , but now ter is a small loadin circle which keeps rotating n its been lik that for almost an hour, i cant neither switch it off or restart it now..what should i do..n coz of the stupid micro sim m stuck.. cant even switch temporarily. plzzz help me