I bought my Nexus 7 on 31/12/12, the speaker blown after 2 days so I took it for one-to-one exchange with the dealer, but the speaker blown again after a weeks even though I kept nexus 7 in silent mode and avoid using the speaker. Called Asus SC but no one answer, facebook them but nobody replies, disappointed

Nexus 7c. I went to the SC once, and got this answer: "You have to send it to us then only we can confirm the availability of the stock of nexus 7's speaker", lol.

Anyone using umobile on nexus 7 3g?
A weird problem appears after i put an umobile sim card on my nexus. After restarting the nexus 7 keeps staying in silent mode. Even though i tried to turn off silent mode by holding the power button and deactivate silent mode. i can't increase the volume by using the volume rocker. All the media player apps including youtube will not play the media content, they js got stuck. After i changed back to my old maxis sim card, the problem will js gone. Any idea how this happens?

TL;DR
Switched to Umobile from maxis, weird problem arised after inserted the umobile sim card, nexus 7c can't exit silent mode, back to normal after i inserted maxis sim card

Anyone received Android 4.3 OTA update?