Re: non-replaceable battery
If/when you get desperate, this non-replaceable battery claim might not be so.
Now this is definitely not for the average Joe, but I replaced the battery on a Nexus 4 and a Nexus 5 armed with nothing more than a £10 mobile phone "toolkit" from eBay, the batteries themselves, and a well executed YouTube video. And I'm the most hamfisted caveman you could meet. They are funny looking things actually, for a start they are not solid, they bend about like a packet of paste. Their connectors are fiddly too. But both worked first time and ones still in daily use. Just sayin' !