At 170x85mm and with 9mm thickness, the Hisense A7
is far too big for one-handed use. Android
10(API 29), no
It has a 1800x900 monchrome e-ink 6.7" screen, with presumably
3x the reflectivity of the color e-ink but otherwise similar
HiSense A7 Pro CC
Xiaomi Moaan InkPalm 5 (2021)
At 145x75mm and with 7mm thickness, the
Xiaomi Moaan InkPalm 5
is close to fitting into one hand. Android
8.0(API 26), no
With a 1280x730 monochrome e-ink 5.2" display, it is more
compact than contemporary Hisense offerings.
The comparatively old Android version is somewhat surprising,
as is the lack of cameras.
Hisense A5 Pro CC (2020)
At 155x75mm and with 9mm thickness, the Hisense A5 Pro CC
is quite big for one hand; I certainly wish it was a
small phone. Android
10(API 29), no
With 4096 colors enabled by
it reflects only 30% of the light that the monochrome
HiSense A5 Pro
would. So while having colors is quite awesome, I do use the
backlight a lot more than I expected.
For completeness: 1440x720 on a 5.8" display.
Hisense A2 Pro (2017)
At 160x75mm and with 9mm thickness, the Hisense A2 Pro
is too big for one hand. Android
7.0(API 24), no
Taking over the dual display mantle from Yota, it has LED
on the front and monochrome 960x540 e-ink on the back, being
close in specs to the Yotaphone 2, not 3.
Yotaphone 3 (2017)
At 155x75mm and with 8mm thickness, the Yotaphone 3
is almost too big for one hand. Android
With both LED on the front and e-ink on the back (mononchrome
1280x720), it was the last phone by Yota before the company went
bankrupt in 2019.
With both an AMOLED screen on the front and e-ink on the back,
you get the best of both worlds. The monochrome e-ink screen is
curved which does not matter in practice, and the low 960x540
resolution is also enough. There is no backlight, though.
The mother of all e-ink smart phones, the Yotaphone has both
an LED screen on the front and e-ink on the back, the latter
monochrome with 640x360 resolution, which I imagine could be a
E-ink phones are incredibly eye-friendly and encourage book
reading instead of web surfing; that alone is one reason why
they will always be awesome in my mind.
I hope you enjoyed our tour -- have a nice day!