Onthe receiverside, when the receptionqualityis above a thresholdnecessary tocarry out a successfuldecodingof the mainchannel the main channel is reproduced.
There's also an off-road mode, which essentially gives you the option to switch over to Opera Mini for extra data compression for those times you need it -- this obviously comes in handy when you're reaching your data threshold or just in a low-reception area.