Quote:
Originally Posted by j.p.s
K2 was Sprint. reports of K2 connectivity loss started showing up here some time ago.
DXG was ATT.
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Thanks.
Then the DX was Sprint also.
Amazon purchased service from ATT for the DXG because Sprint did not have support for International M2M service.
The same Radio/Modem is in both the DX and the DXG, so for continued 3G support (from ATT) so only the SIM card needs to be changed (it is in a standard socket, easy to remove once the back is off).
But as mentioned in the posts above, that would only be a short term solution.
A better solution would be to convert the older Kindles to 4G-LTE with auto fallback to 3G-GSM or 3G-(something).
I recently purchased "standard" Radio/Modem for my laptop that does just that.
It is physically too big a card to fit in the Kindle, but qualcom does make such Radio/Modem cards in the Kindle size.
The (very few) Kindle models with 4G-LTE Radio/Modems with fallback to 3G might be used as a guide to coming up with what would work to update the (many) older, 3G-only Kindle models.
But at least two of those models are the "impossible to open" models.