^^^
The official SDK for Apple iPhone is to be released only during February 2008
and long after that only you will be getting native 3rd party apps which have to pass the Apple code verification/signature program like the way Symbian does.
*developer.apple.com/iphone/devcenter/third_party_apps.php
the so called '3rd party apps' you are referring to are illegal and can only be installed by jailbreaking (read: unlocking) the iPhone.
also using unlocked iphone is illegal. since ppl were buying in large quantities, unlocking them and selling them abroad, Apple introduced security measures like buying only through 'credits cards' and accepting no cash etc. etc.
so yeah, if you are using the iPhone in India, it is Illegal as it is not officially launched. and if you update to the latest released firmware before unlocking softwares are updated, you run a high risk of bricking the iphone.
I'm wide awake and you now know who is drowsy.
Here is a bucket of water. wash your face
*www.engadget.com/search/?q=iphone+3rd+party+apps*www.engadget.com/2007/09/12/apple-backtracks-updates-will-most-likely-break-3rd-party-iph/
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