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Question: my ringer and txt message sounds are low, what could it be?

I just got this phone and I love it. i had the older model as well. the only problem i have with this phone is that the ringtones and txt message tone is very low when i get a call or txt. the volume is set all the way to 7. when i go into the settings it plays it loud but like i said when i get a call or txt it is very much lower. can u help me plz!