Secrete code in mobile phone

1. *#07# : To check the SAR value
   SAR stands for Specific Absorption Rate which is measure of the amount of radio frequency energy absorbed by the body when using a mobile phone.
   Federal Communications Commission (FCC) has adopted limits for safe exposure to radio frequency (RF) energy which is 1.6 watts per kilogram (1.6 W/kg).
   Any smartphone at or below this SAR levels is “safe” to use. SAR below 1.6 watts per kilogram (1.6 W/kg) then it is OK otherwise you are advised to change your smartphone immediately.
   SAR level of smartphones:
   
• iPhone 6: >> 1.59 W/kg 
• LG G3: >> 0.99 W/kg 
• LG G2: >> 1.44 W/kg 
• Samsung Galaxy Note 2: >> 0.42 W/kg 
• Samsung Galaxy Note 3: >> 1.07 W/kg 
• Samsung Galaxy Note 4: >> 1.20 W/kg 
• Samsung Galaxy S5: >> 1.28 W/kg 
• HTC One (M8): >> 1.29 W/kg 
  
  
2. *#67# : To check call forwarding
   
3. *#61# : To get more Info on Call Forwarding
4. *646# : To check available minutes
5.  *225# : To check Your Bill Balance
6. *#06# : To Display IMEI number
7. #31# : Hide Phone From Caller ID 
9. *3282#: Check Your Billing Cycle 
10. *5005*7672# :SMS Message Center
11. *43# : Activate Call Waiting
12. *#7353# : Quick Test Menu (Samsung Galaxy Only) 
13. *#1234# : Firmware (Samsung Galaxy Only) 

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