One of the iPhone 4's last carrier launches quietly arrived Wednesday as Apple brought the phone to Koodo in Canada. The 16GB version of the smartphone is available on the typical Canadian option of a three-year contract for $160 but can also be had on the carrier's distinctive Tab plan. Subscribers can get as much as $150 off of the price of a contract-free iPhone, dropping it to $500, and have about 10 percent of their total phone plan's rate contributed towards the Tab each month.