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How can Sony Ericsson w9 10 tell whether it is a European version or something? How to see whether to renovate the machine?
CDA code, also known as hardware identification number, is equivalent to the signature of mobile phone, which can identify the model and region of mobile phone.

Viewing mode of CDA code: in the standby state of unlocking the keyboard, enter * right * Zuo Zuo * left * to enter service information, and then select 1 line in the custom column of software information.

Only three codes in one can identify the refurbished machine.

Three codes in one means the IMEI code on the back of the machine (remove the battery), and the IMEI code on the box is the same as the IMEI code in the machine (*#06# query).

Since a large number of refurbished machines have appeared in the market, if buyers want to ensure that they buy brand-new machines, then the three-in-one machine is of course the best choice, because it is basically impossible to be refurbished.