Well....
Considering THERE IS NO iPhone 5 what do you think?
Considering they line up to buy new Apple equipment, WHY would they choose YOU to have one for free?
Let Google be your friend, do a little research.
To answer your question......
YES! it is indeed a scam!
Text message saying: You have been chosen to test and keep the new iPhone 5. Enter 3899 on http://iphone5winner.com to validate. You can share this code with up to 3 friends.
Receive a text - from 347-205-2050: You have been chosen to test and keep the new iPhone 5. Enter 3899 on http://iphone5winner.com to validate. You can share this code with up to 3 friends.
Just reporting this scam - hopefully some day these scams will end!