New Delhi, Oct. 14 -- Apple is letting iPhone Duo buyers prepare their purchase before preorders open Friday, October 16. Its Get Ready tool lets customers choose their new iPhone ahead of time, then return to complete checkout when orders begin at 5 a.m. Pacific, or 8 a.m. Eastern.

The feature is the focus of Engadget's report on preparing for the preorder rush. Apple's US purchase page confirms the timing and invites customers to choose their phone now to speed through checkout later.

The distinction is important: preparation is not the same as placing an order. Buyers still need to complete checkout when the preorder window opens. Apple's invitation to save time does not promise a reserved unit, priority over other buyers or delivery...