LG GW520 - Page 170

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11. RF Calibration
GW520 service manual
11.2.9 Calibration data will be saved to the following folder.
Notices:
1. The state of Phone is “ ptest mode “ during the CALIBRATION.
2. Calibration program automatically changes either “normal mode” or “ptest mode”.
3. Phone operation Mode
< Normal Mode> <Ptest Mode>