Samsung SGH-T819

hi, just got my t819, nice phone, but how the heck do I disable the keypad lock? gets real old having to do 3-4 key strokes just to initiate a call etc., thanks

Call Volume/Speaker Phone Volume - While on a call (I agree with Devidence's item review) Everyones voice seems to be a bit muffled, some calls being more clear than others but in a general sense its nothing to brag about as I find myself saying 'What?' often. Note this is with the in-call volume maxed at 7. The speaker phone is no different. I found myself huddling near my phone 3-5 inches away to actually hear the speaker phone. What I find odd is that everything else with the phone audio wise (mp3s, ringtones, midi, alerts) are more than exceptionally loud... and I like it! I think that this issue might be solvable through a firmware update on the platform itself. I hope it gets taken care of soon... Im having second thoughts on this phon...
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Is there any way that anyone here knows how to change the T9 Predictive Texting feature off and switch it to Manual Letter by Letter Texting in Text Messaging?

Any one else notice that it has the 1700 band and T-mobile is not advertising it anywhere? even on the phone details at tmobile.com it does not say anything about 1700 or 3G. 🤨