This post is for LG Optimus P970 Speaker Problem Solution. If your speaker is not working make the jumpers as shown in the diagram below to solve this problem.
Before doing any hardware solutions make sure that your speaker is not busted, replace it with a new one. Also clean the speaker connection points and the general area around it to make sure that moisture or carbon is not causing this problem. I have marked LG Optimus P970 Speaker Track Ways Jumpers in the following diagram.
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Note: Every diagram we post on mobilerdx.com is tested by one or more members of our team. Still Use them at Your Own Risk we are not responsible if these solutions may cause any harm to your phone.