In message , at 09:30:00 on Wed, 17 Jul
2019, Recliner remarked:
Roland Perry wrote:
In message , at 08:49:30 on Wed, 17 Jul
2019, Anna Noyd-Dryver remarked:

Now you mention it, I did once have a case for a smartphone that had
power bank integrated, which meant having a pass-through connector. But
the battery inside that died very quickly (a matter of months). The fact
they are so rare makes me think there's something systemically wrong
with them.

Is it also perhaps because the backs of phones increasingly have buttons
and camera lenses/flashes and so on - which would tend to get obscured
unless the case had exactly the correct cut-outs in it.

The case has to be designed to fit the size, shape and connectors of the
phone anyway; putting holes in the right place for camera, microphone,
speaker etc isn’t rocket science. Plain cases for every variety of phone
manage it, so do the powered cases.

I just went to Amazon to look, for my LG phone. A choice of 13 products,
every single one "Currently unavailable".

Presumably because your phone is ancient?

It's only three years old, but a design that's five years old. Sadly it
just missed out having a major Android version change installed from
new.

The assumption is that people buy accessories when they first buy a
phone,

Really? They don't stop getting apps for them a week into ownership, so
why would they stop buying accessories.

not when they unearth one in an archaeological dig.

If I'm unearthing old phones, then they'll be from the 90's, not the mid
2010's

Of course, there's a small chance you might be able to find a well-used one
on eBay.

I don't think a booster-back ever existed. eBay as many people selling
the user-replaceable batteries though.
--
Roland Perry