The Bluetooth low energy protocol is not backward compatible with classic Bluetooth protocol. My iPhone 4s can not find my sonny in-dash player. However my iPhone 3GS does it. Very disappointed with this. Any idea how it can be fixed???

The Bluetooth low energy protocol is not backward compatible with classic Bluetooth protocol.
My iPhone 4s can not find my sonny in-dash player. However my iPhone 3GS does it. Very disappointed with this.
Any idea how it can be fixed??????

Hello,
You are correct, Blue tooth low engergy, BTLE.(only) devices are not backward compatible with Classic bluetooth and cannot connect.
However the Apple 4S and above have Bluetooth 4.0 support.. Hardware wise it has bothClassic Bluetooth, like the 3GS, as well as Bluetooth Low Energy.  There is no good reason why your 4s cannot communicate to your Sony in-dash player using the Classic bluetooth that resides in the 4S.
I know that this does not answer the why it does not work, but it should work. Do you have to somehow re-pair the new phone up to the player?  Not  knowing the model of the Sony it is hard to investigate.
And I hate to ask but are you sure that the Bluetooth radio is on in the phone?
JT

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