Q. How do I enter my Samsung Unlock code?

A. Click here for instructions on how to enter Samsungunlock codes.

Q. Error Message "TAT MODE FAILED" or "Error code -PCOM"  when using the Samsung unlocking software..

A. TAT mode is the Service mode that Samsung handsets need to bootup into in-order for servicing functions such as removing the sim/network lock(s) to take place.

"TAT mode failed" error is caused by either one the of the two reasons below;

1. You have not selected the correct Comport that your phone is connect to;

Ensure you select the correct Comport number. If you have the cable drivers installed correctly (USB Cables only) then you should be able to find which Comport your cable is using by checking the "Ports (COM & LPT)" in device manager.

To access the device manager:
Go to windows control panel
Double Click on the 'System' icon in control panel In the System Properties window, click the Hardware tab, then click Device Manager.

2. The cable you are using is not be cable of unlocking;

If you have selected the correct com port and are still experiencing this error then this is because your data cable does not support unlocking. It is not able to send commands to the phone in-order to switch it into TAT mode (service mode). You need to purchase the exact cable recommended by the unlocking software.
 

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