Humm, well, come May I'll be eligible for another subsidized phone purchase by Verizon. Thinking about what to get. Using Android right now, and frankly prefer it on principle (not an Apple fanboy, more a Google fanboy I guess)...
My last purchase, Droid Bionic, was purchased for a few reasons:
1. Dual core 4G LTE
2. Android 2.3 Gingerbread claimed to support the OpenADK accessory toolkit--this turned out to be FALSE, Motorola left out the API.
3. Phone's screen is nice and big (I'm a big guy, with huge hands, I like big phones.)
My next purchase... now that I have more experience with electronics/microcontrollers et al, the requirements have changed a tad:
1. Dual core 4G LTE (same)
2. OpenADK support would be very nice, I expect they all have it now.
3. Bluetooth Low Energy (BLE) support--the catch.
BLE is part of Bluetooth 4.0 as I understand, and its hardware operating principle mirrors something else I've used in the past year, the Nordic Semiconductor nRF24L01+ modules which are meant for ultra-low-power (typically a "base station" receiver sits around with its RF baseband engine running, sipping a little power from a grid-tied power connection, while a remote gadget on a shoestring budget of a battery wakes up once in a blue moon and relays some data, going back to sleep and powering off its transceiver). These remote nodes can last years on a single coin-cell battery. Frankly it appeals to my electronics hobby desires a lot more, although the hardware for BLE is currently expensive. Producing BLE-based gadgets that seamlessly interface with my phone w/o cables would be awesome.
But while BLE is included in many of the newest Android phones, Google has no unified API for using it. Motorola and Broadcom went out on a limb and created two incompatible APIs for it. OTOH, Apple has a "one true" API for doing BLE work on their O/S. Hmph. Now my geek-strings are being pulled in different directions.
TBH, the Samsung Galaxy Note series sound nice. A big phone with stylus might catch my fancy if the stylus and drawing interface are worth a damn.
edit: This article explains it all better. http://pocketnow.com/2013/01/17/bluetooth-low-energy