Hello @michael2004 ,
Welcome to the community,
Yes, you need to have a contract with EE in order to order an accessory with EE, as this is payed monthly with your contract.
You can, however, buy it from an EE high street store or of course from Apple.
To contact EE customer service dial 150 from your mobile phone or ring customer service for free using web based app or another phone: +44 800 079 8586 or +44 800 956 6000.
