Quote:
Originally Posted by Quoth
There can't be many non-KFX. A tiny number of azw3 WiFi (K3 to Paperwhite 1) and hardly any Kindles with no WiFi (all no azw3).
The Sixth gen (2013) and later got KFX back ported in 2019.
The LiPoly cells last about 10 years.
The Paperwhite 1 (gen 5) in 2012 is maybe the last without KFX backport. That's 13 years ago come September.
The DXG was the last without WiFi. The K3 (Kindle Keyboard though 4 other models have keyboards) was July / August 2010. It and all later kindles have WiFi. That's nearly 15 years ago. My K3 needs a new battery, a second time. I fear most replacements are old stock and won't last long, perhaps even re-labelled.
So most reliably working kindles have KFX and WiFi.
The July 2010 DXG is the last Kindle without Wifi. It's pretty ghastly to read on due to weight and only 150dpi and only mobi or slow PDF, though like K3 it has a Pearl screen. The K1 is 2007/2008, almost none outside USA, no Wifi, mobi, no PDF or AZW and vizplex screen.
The K2 is February 2009, no WiFi, mobi, maybe PDF, no AZW and vizplex screen.
The DX was spring 2009, no WiFi, USA cell only, mobi & PDF, no AZW and 150 dpi vizplex screen.
The DXi in Early 2010 had modem for outside USA and USA, mobi & PDF, no AZW and 150 dpi.
There are maybe a very few DXi and DXG working and less K1, K2 and DX. All apart from DXG have the very poor Viziplex screen.
Any Kindle older than 2012 will shortly need a new battery, if not dead or replaced already.
Kindles have no "off" so are unkind to batteries.
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It was Kindles up to and including K5 that got cut off from the Kindle store a couple of years ago, so that tallies.