i also have the last build (47.1.A.12.235), i just got this phone so i didn't experience with previous builds. My first issue was the light notification, after searching it seems to be related to imported data from older phone. If you install things manualy everything is working fine for the light notifications. My seconde big issue is on sleep mode it's like he is dropping the wifi connection. I saw someone saying that the option on the wifi (the sleep policy) is kind of reversed. Actually the option "keep wifi on during sleep" when it's on "never" it behaves as it is on "always" so looks like it's reverted. I'm testing this trick (setting the option to never instead of always) since yesterday seems to work. I'm getting the notifications of mails ,facebooks etc as it should when it's on sleep mode. BUT the big question is, when you put the wifi option to "never" does it cut the wifi and rely on the 4g data network? So maybe this is just what he is doing, on sleep mode he relies on the 4g rather then the wifi because we set the option to "never" on sleep mode.
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I also got got screwed by this phone, i don't really have a droping connection but there is some lag to initiate the connection when downloading or loading something seems to be random Also the fact that when the phone is on standby the wifi wont work so no notifications etc, and as soon as you turn it on it will connect again.(and no it's not the wifi sleep policy option)
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