1. turn off the phone
2. place 2 sims on the phone
3. restart the phone
4. keep the WLAN disabled
5. enter the engineering mode * # 82043036 #
6. select the option RF Test Tool (on my phone it’s option 13)
7. Select GSM, to accept him
8. go to Power scan
9. go to Band Select and select OK DCS1800
10. another screen will appear (model F003) look at each of the options until you find one that will have your phone appear unresponsive (this locked)
11. pressing the main button (the box) will take you to the home screen
12. go to the setup menu
13. go to network settings menu SIM1
14. this is a preferred mode
15. select one of the preferred modes GSM or WILAN
16. restart the phone and you should be ready to make calls
Here is some important information I found that actually works on my phone.
* default password is 1122
* special key code to display the firmware version * # 8375 #
* the special key code to enter “engineering mode” * # 82043036 #
* obtained IMEI code * # 06 #
* factory model code * # # # 66 it is NOT recommended that you use it
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