So I rave about the D4 to my husband who concedes to buying/using it this last week. Now he cannot hear callers unless the keyboard is slightly opened and NOT moved once in the sweet spot. The speaker phone is the only way for him to carry on a conversation as of now. And that is not an option not only due to his job but it is also obnoxious when people do that. Anyone know how to fix this? Since I bought it used it has to be fixed or I buy him something else. I am thinking replace the internal speaker if possible. I found a place online that sells an oem speaker. Should I go for it or has Anyone found another fix? Factory reset? Rooting? Anything so I don't have to buy another phone. Thanks.