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Moto Razr HD secret codes

To get your IMEI (International Mobile Equipment Identity) number:*#06# 
The �master key� unlock code for phone and SIM card lock: 19980722 OK 
To change the phone�s PIN number: [] [] [] 0 0 4 [] 1 [] 
Access the manufacturing information:*#403# OK 
Adding phonebook to the main menu: [] [] [] 1 0 5 [] 1 [] 
Turn on Enhanced Full Rate (improves call quality/trade off of using 5% more energy:*3370# -> 
To make Enhanced Full Rate go away: #3370# -> 
Change default language to English (lovely when renting cell abroad): *#303# Ok -> 
Adding messages to main menu: [] [] [] 1 0 7 [] 1 [] 
Unlocking SIM after pressing wrong PIN three times (�puk� number): [] [] [] 0 0 5 [] 1 [] 
Copy your phonebook menu: [] [] [] 1 0 8 [] 1 [] 
Save settings and restore default language: *#0000# OK -> 
Lists Hardware and Software Version: *#300# OK -> 
Play around in Engineering mode: #304*19980722# -> 
And to make it go away: *304# OK -> 
Turning the net monitor on: * * * 1 1 3 * 1 * [OK] 
And off: same 
Keypads functionality test: *#301# OK -> 
In order to lock keys: *7 (press at same time) 
Press to hear self indulgent, experimental music: #9 
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