Can't Change Text Msg. Alert Sound on Samsung A167

SOURCE: Setting/Changing alert tone for when I get a new text message.

You need to go to profiles & select a profile to edit then in the upper right hand corner you need to highlight the envolope.

SOURCE: message alert volume

It seems to be a problem on all these Sony Ericsson phones.

You can make it louder by going to setting/profiles and select an outdoor profile.
Also choose a sound that is very audible, you'll have to download one. I recommend: Zedge, http://www.zedge.net/
and a bonus, http://www.ownskin.com/

SOURCE: voicemail alert tones

I think that there is just a generic message alert tone setting applies for both vm and text. If your voicemail alert tone and message alert tones are the same, this is probably the case. I have searched the menu on my phone and haven't found any setting to change vm tone specifically.

SOURCE: LG Rumor - No Message Alert

I fixed my problem by going to SETTINGS then performing a firmware update then turning off the phone and powering it up again.  No problems since!

SOURCE: vibrate alert nokia 3110 not working

I think the ******** in your mobile phone is disconneted or not working. Try opening the phone and see for yourself.