... I can get a good phone upgrade for under $30?... (actually more then I paid for the dongle ad OTG cable) as far as annoying... meh... no worse then dealing with a wahoo ant+ dongle...
this is my note2... i've since rotated the phone, it works well, and I'm not stuck using Icrap when I'm not riding ;-)
the upgrade of android is not poor... the upgrade path from OEMs is moderate and the upgrade path by the phone retailer is what is poor... the manufacturer company isn't TOO far behind on most flagships, but it's once it gets to the verizon, sprint, att, tmobile lvl that things get real slow (part of the cost of the way the US buys cell phones) go with a nexus device and you get similar support as apple gives...
if you are a moderate geek it's not hard to hack your phone and install the newest version of android and I'm sure many of the developers have implemented BT LE