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Dwayne MichnalFlag for United States of America

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Invalid mmi code

I have the HTC One m8 phone. Every time I try to type in a code on my dialer it always shows, (invalid mmi code). I've tried several ways but I still can't get it to work. I was trying to enter secret codes for htc, as an example. Does anyone have a solution to this. And I don't have a PC
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Jackie Man
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What is the problem with your phone and what do you want to do with the secret code?
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It's not so much secret codes. It's just about any codes that I try to enter. One of them that I was interested in was trying to go to hardware section to go to audio so I could increase my factory volume settings. I can't remember what it was but there was an app for that but my phone didn't support it
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The code I was trying to enter was *#*#3646633#*#*
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Thank you very much for your time and help. One last question. How can I root my phone in one step that will install everything I need to do it without having to zip files and etc without a PC
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Thank you very much. I'm glad I had the chance to chat with you. I do appreciate your wisdom. Have a good one buddy
It is my pleasure to help.

Good luck.
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