<s>
Phosh	B-Language
(	O
portmanteau	O
of	O
phone	O
and	O
shell	B-Operating_System
)	O
is	O
a	O
graphical	B-Application
user	I-Application
interface	I-Application
designed	O
for	O
mobile	O
and	O
touch-based	O
devices	O
.	O
</s>
<s>
It	O
is	O
the	O
default	O
shell	B-Operating_System
used	O
on	O
several	O
mobile	B-Application
Linux	I-Application
operating	O
systems	O
including	O
PureOS	B-Language
,	O
Mobian	O
,	O
and	O
Fedora	O
Mobility	O
.	O
</s>
<s>
It	O
is	O
also	O
an	O
option	O
on	O
postmarketOS	B-Application
,	O
Manjaro	B-Application
,	O
and	O
openSUSE	B-Operating_System
.	O
</s>
<s>
In	O
August	O
2017	O
,	O
Purism	O
,	O
personal	O
computing	O
hardware	O
vendors	O
and	O
developers	O
of	O
PureOS	B-Language
announced	O
their	O
intention	O
to	O
release	O
a	O
privacy-centric	O
smartphone	B-Application
that	O
ran	O
a	O
mobile-optimized	O
version	O
of	O
their	O
Linux-based	O
operating	O
system	O
.	O
</s>
<s>
With	O
this	O
announcement	O
,	O
Purism	O
released	O
mockups	O
of	O
Phosh	B-Language
that	O
resembled	O
a	O
modified	O
GNOME	B-Language
Shell	I-Language
.	O
</s>
<s>
This	O
eventually	O
became	O
known	O
as	O
the	O
Librem	B-Application
5	I-Application
.	O
</s>
<s>
In	O
April	O
2018	O
,	O
Purism	O
started	O
to	O
publicly	O
release	O
documentation	O
that	O
referenced	O
Phosh	B-Language
with	O
updated	O
mockups	O
,	O
and	O
hired	O
GNOME	B-Application
UI/UX	O
developer	O
Tobias	O
Bernard	O
to	O
directly	O
contribute	O
to	O
the	O
shell	B-Operating_System
.	O
</s>
<s>
Despite	O
the	O
Librem	B-Application
5	I-Application
phone	O
being	O
delayed	O
,	O
Phosh	B-Language
received	O
its	O
first	O
official	O
release	O
in	O
October	O
2018	O
,	O
which	O
was	O
primarily	O
focused	O
on	O
developer	O
usage	O
.	O
</s>
<s>
The	O
first	O
official	O
hardware	O
for	O
direct	O
use	O
with	O
Phosh	B-Language
was	O
shipped	O
several	O
months	O
later	O
in	O
December	O
when	O
Purism	O
shipped	O
hardware	O
devkits	O
.	O
</s>
<s>
In	O
July	O
2020	O
,	O
the	O
PinePhone	B-Application
was	O
released	O
with	O
a	O
version	O
of	O
postmarketOS	B-Application
that	O
featured	O
the	O
Phosh	B-Language
interface	O
.	O
</s>
<s>
Since	O
August	O
2021	O
,	O
Phosh	B-Language
's	O
source	B-General_Concept
code	I-General_Concept
repository	I-General_Concept
has	O
been	O
hosted	O
by	O
the	O
GNOME	B-Language
Foundation	I-Language
,	O
but	O
Purism	O
maintains	O
a	O
separate	O
repository	B-General_Concept
for	O
changes	O
prior	O
to	O
being	O
merged	O
into	O
the	O
development	O
branch	B-General_Concept
.	O
</s>
<s>
The	O
Phosh	B-Language
Overview	O
screen	O
is	O
the	O
primary	O
method	O
to	O
interact	O
with	O
the	O
shell	B-Operating_System
.	O
</s>
<s>
When	O
the	O
device	O
's	O
display	O
is	O
toggled	O
from	O
off	O
to	O
on	O
,	O
Phosh	B-Language
displays	O
a	O
Lock	O
Screen	O
with	O
the	O
time	O
and	O
date	O
along	O
with	O
several	O
indicator	O
icons	O
that	O
illustrate	O
the	O
device	O
's	O
status	O
of	O
cellular	O
network	O
service	O
,	O
Wi-Fi	O
,	O
Bluetooth	B-Protocol
,	O
and	O
battery	O
percentage	O
.	O
</s>
<s>
Phosh	B-Language
is	O
based-on	O
the	O
GTK	B-Application
widget	B-Library
toolkit	I-Library
,	O
and	O
descends	O
as	O
a	O
mobile-specific	O
fork	O
from	O
the	O
GNOME	B-Language
Shell	I-Language
.	O
</s>
<s>
Like	O
GNOME	B-Language
Shell	I-Language
,	O
Phosh	B-Language
relies	O
upon	O
certain	O
GNOME	B-Application
components	O
to	O
provide	O
a	O
fully-featured	O
mobile	O
interface	O
.	O
</s>
<s>
Primary	O
examples	O
of	O
this	O
are	O
its	O
use	O
of	O
the	O
GNOME	B-Application
Session	O
Manager	O
for	O
session	B-Protocol
management	I-Protocol
and	O
the	O
GNOME	B-Application
Settings	O
Daemon	B-Operating_System
for	O
storing	O
application	O
and	O
shell	B-Operating_System
settings	O
.	O
</s>
<s>
Phosh	B-Language
also	O
makes	O
use	O
of	O
some	O
freedesktop.org	B-Application
system	O
components	O
such	O
as	O
Polkit	B-Language
,	O
UPower	B-Application
,	O
iio-sensor-proxy	O
,	O
NetworkManager	B-Protocol
and	O
ModemManager	O
.	O
</s>
<s>
It	O
is	O
both	O
open	B-License
source	I-License
and	O
libre	B-Application
software	I-Application
.	O
</s>
<s>
Closely-related	O
technologies	O
used	O
in	O
conjunction	O
with	O
Phosh	B-Language
,	O
and	O
also	O
significantly	O
developed	O
by	O
Purism	O
,	O
are	O
Phoc	O
(	O
a	O
Wayland	B-Language
compositor	O
)	O
,	O
Squeekboard	O
(	O
an	O
on-screen	O
virtual	O
keyboard	O
)	O
,	O
feedbackd	O
(	O
a	O
haptic	B-Device
feedback	O
daemon	B-Operating_System
)	O
and	O
portions	O
of	O
libadwaita	B-Language
in	O
regards	O
to	O
adaptive	B-Algorithm
windowing	O
to	O
allow	O
for	O
otherwise	O
desktop-centric	O
apps	O
to	O
act	O
and	O
feel	O
as	O
true	O
mobile	O
apps	O
.	O
</s>
