I find sound will occasionally stop after I pull out the headphones cord. It seems to not get the hardware message that the ear buds have been removed and it is time to switch system audio back to the speaker. When this happens it still runs as if there are no problems.
If I plug the earbuds back in, pause, then quickly remove them, it usually corrects the problem.
This is the single annoyance I have with this phone but:
1. I briefly had a Galaxy Nexus that ran ICS and had the same problem before I chose the RAZR MAXX for other reasons.
2. When the ICS update came for the RAZR MAXX that is when this started for this phone as well.
I am hoping that once Jelly Bean is ready for this phone it will cure this problem.
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InfinityDevil