Samsung Stratosphere 2 - people cant hear me when not using Bluetooth! How can I fix this?

[AC Question]

Samsung Stratosphere 2 - people cant hear me when not using bluetooth!

Hey all - I have an older Stratosphere 2 phone - I use a bluetooth most of the time. When the battery dies or I need to go to regular phone - no one can hear me! I have to go to SPEAKER phone in order for them to hear me...

This is super annoying, and I can't seem to find the right settings to change!

Also - smaller issue - the screen dims every time I go to the WEB. I have the device set to keep the brightness level UP - but it STILL goes darker when I go to the web.. any ideas?

Thanks everyone!