IMEI number:
*#06#
Code to close keys. Press together *7
Note: [] (pause) equates to a * pass hold in until box appears.

Select phone line – (use this to write things next a provider name):
[] [] [] 0 0 8 [] 1 []
Add phonebook to categorical menu:
[] [] [] 1 0 5 [] 1 []
Add messages to categorical menu:
[] [] [] 1 0 7 [] 1 []
Copy SIM mental recall (phonebook menu):
[] [] [] 1 0 8 [] 1 []
Eng Field options (main menu):
[] [] [] 1 1 3 [] 1 []
Slow (Frequency of poke menu):
[] [] [] 1 0 1 [] 1 []
Medium (Frequency of poke menu):
[] [] [] 1 0 2 [] 1 []
Fast (Frequency of poke menu):
[] [] [] 1 0 3 [] 1 []
Enable EFR:
[] [] [] 1 1 9 [] 1 []
Function :
[] [] [] # # # [] 1 []

Change pin:
[] [] [] 0 0 4 [] 1 []
Unblocking regulating a “puk” number:
[] [] [] 0 0 5 [] 1 []

There have been lots of identical codes exist. If we shift a final series to 0 we can deactive which code. The 3 series series during a center have been from 0 to 999. we put a many engaging codes. (EFR):Enhanced Full Rate Codec.

You can shift GSM frequencies to 900/1800 by entering a enginnering model. Following a next steps:
enter menu as well as press 048263* quickly, afterwards we will come in a tip engineering menu
under “Opcode”
input 10*0*3 for GSM 900
10*0*4 for GSM 1800
10*0*5 for GSM 1900
10*0*6 for twin rope GSM 900/1800
10*0*7 for twin rope GSM 850/1900

To supplement additional summary space 4 your Motorola C350 C450 C550 or C650, press menu button, press 048263* quickly, afterwards upon a popup menu come in 47 press ok.press 50 as well as ok.press 1 ok.press 64 ok.press 1 ok.press 186 as well as ok.You will embrace an additional 50 msgs mental recall space.Switch phone off as well as behind on.(not tested)

Important!
Try these codes during your own risk! We do not accept any complaints.
Some of these codes might not work.