I have a LG
CU400 and every time i answer a call I have to turn it on the speaker because the
ear part doesn't work. people can hear me but I can't hear anything.
The volume is on max. It will randomly work every now and then, but usually doesn't. Anything i can do to troubleshoot this problem?
What you should do is call your service provider and have them send you a new phone. if it is under warrenty, you shouldn't have to pay anything. if not you might as well buy a new phone and recycle the old one. :)
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This problem has been driving me crazy too, but I found that if you connect to a blue tooth headset and when you are talking go to the "option" on the top right soft key and choose "use headset" you phone will start working again. It worked for me and I hope that it will work for you too.