No sound bug could be solved?
Some lumia 720 users faces the 'no sound' problem. Unexpected, your celphone doesn't make any sound by it loud speaker, you can use it to make calls normally. If you blow with your mouth and hit the speaker grill with your finger, the sound comes back but by the time it goes again.
The question: Changing the speaker could solve this problem? If not, i love my lumia, is it the best way to change the model to another?