"Our September surveys indicated very strong initial sales and back orders for the iPhone 5s and strong iPhone 5c sales at the four tier-1 U.S. carriers and also in international markets," said analyst T. Michael Walkley.
The iPhone 5s was the top selling device at AT&T, Verizon, Sprint, and T-Mobile in September. The iPhone 5c was the second most popular device at AT&T and Sprint and the third most popular device at Verizon and T-Mobile. It was the Galaxy S4 that outsold the iPhone 5c at Verizon and T-Mobile.
"We believe these price cuts combined with Samsung's aggressive marketing and effective advertising campaign for its existing and new high-tier smartphones, such as the recently-launched Galaxy Note 3, could potentially help Samsung reduce high-tier smartphone share losses to Apple in October despite the strong iPhone 5s and 5c demand."
Take a look at the chart below for more details...