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Which Android (with Jelly Bean, 4.2) devices support Bluetooth low energy (BLE)? Does Samsung Galaxy S III support it?
(This question came up after reading the blog post Bluetooth 4.0 on Galaxy S3.)
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My Samsung Galaxy S2 works nicely with the Polar H7 bluetooth heartrate monitor, using MyTracks. Which, I assume, means that the SGS2 supports BTLE No such luck with my Nexus4 though.
No Android phone currently supports BLE. Some phones have the BLE chipset but since Android doesn't support BLE, the BLE hardware is basically unusable.
I believe that currently only the Motorola RAZR has BLE support (because Motorola provides their own BLE library to developers). The S3 does not support BLE (drivers / API not available).
This letter from the COOKOO watch project describes Android's Bluetooth 4.0 disaster well.
Additionally, this issue has become the unofficial venting / complaining forum for developers. There are occasionally some useful updates there.
Edit
Bluetooth low energy is now officially supported in Android 4.3 (API 18). Check the developer's guide here.