What does the mobile Unicom non-contract machine mean?

Generally, after signing a minimum consumption contract with the communication company for one to two years, the communication company will return part or all of the mobile phone money to the customer according to the contract. It usually needs to be returned monthly according to the contract. There was no downtime, arrears, account cancellation and transfer during the signing period. Unicom's contract machine is generally used together with the mobile phone card during the contract period. During the contract period, users are not advised to use the mobile phone and the card separately, that is, if you bind the purchased communication service, USIM card, user number and mobile phone terminal during the contract period, you can enjoy the preferential policy of terminal subsidy.

Non-contract machines are bare-metal machines that you buy in ordinary large-scale mobile phone stores or mobile phone brand stores. Bare metal generally has no contract plan. You don't need to pay much for a contract, just buy a mobile phone directly, and then buy a mobile phone card and put it in your mobile phone. However, taking Unicom contract machine as an example, if you participate in the Unicom contract plan and send a mobile phone to pre-store the phone bill, pre-store a certain amount of phone bill and choose the corresponding package, you can enjoy the full subsidy to purchase the contract mobile phone, and the purchase price is zero yuan. This is 0 yuan's. It will be returned to you every month, but you must use it within the agreed contract period, such as 1 year. If you give up the use halfway, it will be regarded as a breach of contract and you need to pay liquidated damages.

Dual-card dual standby means that a mobile phone inserts two mobile phone cards, which can be used together. You can use card 1 to make a phone call, or you can use card 2 to make a phone call and send a message. Unlike a single-card mobile phone, it can be used with two mobile phone cards.