The mobile 4G flight package itself is not a contract package, but it should be noted that mobile companies in various provinces may give extra traffic or voice calls on the standard flight package, and any gift period is a contract period. Also, have you participated in any activities such as deposit and fee delivery, deposit and fee delivery, full delivery, etc. during the use of the Flying Enjoy Package? These activities usually have a contract period. If there is a contract period for any reason, you can't close the account. You can't close your account before the contract expires.