MTS secret codes to activate Free Dialler Tone

MTS is a new company introduced in India hence most of his/her customers are aware of these following codes..HENCE SOME MTS SECRET CODES

MTS secret codes:
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*225# - Check ur balance.
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155 - for more information all service & Press 6 for cust.care.
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53555- Dialer Tune activatn.

MTS users now activate dialer tune freely:
Keep ur balance below Rs.1.
Just Dial *777*077#.
Now select a song.
DoNe!