Apple has advised customers to consider adding a protective case and a fast power adapter when purchasing the iPhone 18 Pro during pre-orders. The company includes a 1-meter USB-C cable in the box but does not provide additional accessories. The recommendations focus on practical items that enhance the user experience. A case is suggested for protection, while a power adapter is recommended for those without a fast charger. Other accessories, such as straps or additional storage, are noted as optional. The guidance aims to help customers make informed choices during the initial purchase. The advice aligns with typical recommendations for new device buyers.