1, customized version: also known as custom machine, a mobile phone specially customized by telecom operators.

2. Public version: refers to ordinary mobile phones sold to the public.

Second, the characteristics are different.

1, customized version: some telecom operators pay part of the cost, so the price is cheaper.

2. Open version: There is no part of the fees paid by telecom operators, so it is more expensive than custom machine.

Third, the function is different.

1, customized version: Communication operators will restrict the service functions or networks of other operators.

2. Open version: there are no restrictions on service functions and networks.

Impact on mobile phones

Custom machine is relatively not custom machine. It adds some software functions (hardware unchanged) without changing the original functions of the machine, such as Tianyi 3G, which does no harm to the machine itself.

However, customization opportunities restrict other operators, that is, if it is telecom custom machine, it may block the networks of China Mobile and China Unicom; Non-custom machine will not involve these issues, but non-custom machine is more expensive than custom machine because there is no part of the cost paid by operators.

Custom machine's own applications will occupy the memory of the mobile phone. If the memory of the mobile phone itself is not large and the customized application takes up a lot of memory, then the application installed by itself will be greatly limited. Non-custom machine applications are generally rare. If you don't like them, you can uninstall them.