<s>
LineageOS	B-Application
is	O
an	O
Android-based	O
operating	B-General_Concept
system	I-General_Concept
for	O
smartphones	B-Application
,	O
tablet	B-Device
computers	I-Device
,	O
and	O
set-top	O
boxes	O
,	O
with	O
mostly	O
free	B-License
and	I-License
open-source	I-License
software	I-License
.	O
</s>
<s>
It	O
is	O
the	O
successor	O
to	O
CyanogenMod	B-Application
,	O
from	O
which	O
it	O
was	O
forked	B-Application
in	O
December	O
2016	O
,	O
when	O
Cyanogen	O
Inc	O
.	O
announced	O
it	O
was	O
discontinuing	O
development	O
and	O
shut	O
down	O
the	O
infrastructure	O
behind	O
the	O
project	O
.	O
</s>
<s>
Since	O
Cyanogen	O
Inc	O
.	O
retained	O
the	O
rights	O
to	O
the	O
Cyanogen	O
name	O
,	O
the	O
project	O
rebranded	O
its	O
fork	B-Application
as	O
LineageOS	B-Application
.	O
</s>
<s>
LineageOS	B-Application
was	O
officially	O
launched	O
on	O
24	O
December	O
2016	O
,	O
with	O
the	O
source	O
code	O
available	O
on	O
both	O
GitHub	B-Application
and	O
GitLab	B-Application
.	O
</s>
<s>
In	O
March	O
2017	O
,	O
it	O
reportedly	O
had	O
one	O
million	O
users	O
with	O
the	O
OnePlus	B-Application
One	I-Application
being	O
the	O
most	O
popular	O
device	O
.	O
</s>
<s>
CyanogenMod	B-Application
(	O
often	O
abbreviated	O
"	O
CM	O
"	O
)	O
was	O
a	O
popular	O
open-source	B-Application
operating	B-General_Concept
system	I-General_Concept
for	O
smartphones	B-Application
and	O
tablet	B-Device
computers	I-Device
,	O
based	O
on	O
the	O
Android	B-Application
mobile	I-Application
platform	O
.	O
</s>
<s>
CyanogenMod	B-Application
users	O
can	O
opt-in	O
to	O
report	O
their	O
use	O
of	O
the	O
firmware	B-Application
.	O
</s>
<s>
In	O
March	O
2015	O
,	O
Forbes	O
indicated	O
over	O
50	O
million	O
people	O
were	O
running	O
CyanogenMod	B-Application
on	O
their	O
phones	O
.	O
</s>
<s>
The	O
code	O
itself	O
,	O
being	O
both	O
open	B-Application
source	I-Application
and	O
popular	O
,	O
was	O
forked	B-Application
under	O
the	O
new	O
name	O
LineageOS	B-Application
and	O
efforts	O
began	O
to	O
resume	O
development	O
as	O
a	O
community	O
project	O
.	O
</s>
<s>
CyanogenMod	B-Application
offered	O
a	O
number	O
of	O
features	O
and	O
options	O
not	O
available	O
in	O
the	O
official	O
firmware	B-Application
distributed	O
by	O
most	O
mobile	O
device	O
vendors	O
.	O
</s>
<s>
Features	O
supported	O
by	O
CyanogenMod	B-Application
included	O
native	O
theme	B-Application
support	O
,	O
FLAC	B-Application
audio	O
codec	O
support	O
,	O
a	O
large	O
Access	O
Point	O
Name	O
list	O
,	O
Privacy	O
Guard	O
(	O
per-application	O
permission	O
management	O
application	O
)	O
,	O
support	O
for	O
tethering	O
over	O
common	O
interfaces	O
,	O
CPU	O
overclocking	B-Application
,	O
root	B-Application
access	I-Application
,	O
soft	O
buttons	O
and	O
other	O
"	O
tablet	B-Device
tweaks	O
,	O
"	O
toggles	O
in	O
the	O
notification	O
pull-down	O
(	O
such	O
as	O
Wi-Fi	O
,	O
Bluetooth	B-Protocol
and	O
satellite	O
navigation	O
)	O
,	O
and	O
other	O
interface	O
and	O
performance	O
enhancements	O
.	O
</s>
<s>
Many	O
of	O
the	O
features	O
from	O
CyanogenMod	B-Application
were	O
later	O
integrated	O
into	O
the	O
official	O
Android	B-Application
code	O
base	O
.	O
</s>
<s>
CyanogenMod	B-Application
's	O
developers	O
said	O
that	O
it	O
did	O
not	O
contain	O
spyware	O
or	O
bloatware	O
.	O
</s>
<s>
Like	O
CyanogenMod	B-Application
,	O
the	O
LineageOS	B-Application
project	O
is	O
developed	O
by	O
many	O
device-specific	O
maintainers	O
and	O
uses	O
Gerrit	B-Language
for	O
its	O
code	O
review	O
process	O
.	O
</s>
<s>
It	O
also	O
retained	O
the	O
old	O
versioning	O
format	O
(	O
for	O
example	O
,	O
Android	B-Application
7.1	I-Application
is	O
LineageOS	B-Application
14.1	O
)	O
.	O
</s>
<s>
Prior	O
to	O
the	O
official	O
launch	O
of	O
LineageOS	B-Application
,	O
many	O
developers	O
from	O
XDA	B-Application
had	O
already	O
developed	O
unofficial	O
versions	O
of	O
LineageOS	B-Application
from	O
the	O
source	O
code	O
.	O
</s>
<s>
All	O
the	O
released	O
builds	O
are	O
signed	O
with	O
LineageOS	B-Application
 '	O
private	O
keys	O
.	O
</s>
<s>
Builds	O
were	O
released	O
on	O
a	O
weekly	O
basis	O
until	O
12	O
November	O
2018	O
,	O
when	O
the	O
release	O
cycle	O
for	O
devices	O
has	O
changed	O
:	O
the	O
latest	O
LineageOS	B-Application
branch	O
is	O
built	O
daily	O
,	O
with	O
devices	O
receiving	O
a	O
"	O
nightly	O
"	O
OTA	O
update	O
,	O
while	O
devices	O
on	O
the	O
older	O
branch	O
were	O
moved	O
to	O
a	O
weekly	O
release	O
cycle	O
.	O
</s>
<s>
Starting	O
on	O
5	O
June	O
2020	O
,	O
the	O
latest	O
LineageOS	B-Application
branch	O
is	O
also	O
moved	O
to	O
a	O
weekly	O
release	O
cycle	O
,	O
as	O
the	O
server	O
could	O
n't	O
build	O
all	O
available	O
supported	O
devices	O
in	O
just	O
one	O
day	O
,	O
with	O
some	O
devices	O
receiving	O
updates	O
later	O
on	O
the	O
next	O
day	O
.	O
</s>
<s>
On	O
22	O
January	O
2017	O
,	O
the	O
first	O
14.1	O
and	O
13.0	O
official	O
builds	O
started	O
to	O
be	O
made	O
available	O
,	O
following	O
the	O
official	O
announcement	O
in	O
a	O
blog	O
post	O
.	O
</s>
<s>
On	O
11	B-Application
February	O
2018	O
,	O
the	O
13.0	O
builds	O
were	O
stopped	O
,	O
while	O
the	O
source	O
code	O
remains	O
available	O
and	O
security	O
fixes	O
are	O
still	O
accepted	O
on	O
Gerrit	B-Language
.	O
</s>
<s>
The	O
14.1	O
versions	O
of	O
Lineage	B-Application
OS	I-Application
were	O
to	O
remain	O
in	O
active	O
development	O
,	O
but	O
without	O
feature	O
advancements	O
.	O
</s>
<s>
On	O
22	O
August	O
2022	O
,	O
the	O
first	O
version	O
20	O
Gerrit	B-Language
patches	O
were	O
made	O
available	O
,	O
pending	O
official	O
announcement	O
.	O
</s>
<s>
?	O
Unsupported	O
rowspan	O
=	O
"	O
1	O
"	O
align	O
=	O
"	O
center	O
"	O
4.4.4(KitKat )	O
?	O
</s>
<s>
?	O
Unsupported	O
rowspan	O
=	O
"	O
1	O
"	O
align	O
=	O
"	O
center	O
"	O
5.0(Lollipop )	O
?	O
</s>
<s>
?	O
Unsupported	O
rowspan	O
=	O
"	O
1	O
"	O
align	O
=	O
"	O
center	O
"	O
5.1(Lollipop )	O
?	O
</s>
<s>
Like	O
its	O
predecessor	O
,	O
CyanogenMod	B-Application
,	O
LineageOS	B-Application
is	O
perceived	O
as	O
free	B-Application
from	O
unnecessary	O
software	O
often	O
pre-installed	O
by	O
a	O
phone	O
's	O
manufacturer	O
or	O
carrier	O
that	O
is	O
considered	O
to	O
be	O
bloatware	O
.	O
</s>
<s>
LineageOS	B-Application
allows	O
the	O
community	O
to	O
get	O
involved	O
with	O
development	O
in	O
various	O
ways	O
.	O
</s>
<s>
Gerrit	B-Language
is	O
used	O
for	O
the	O
code	O
review	O
process	O
for	O
both	O
the	O
operating	B-General_Concept
system	I-General_Concept
and	O
the	O
infrastructure	O
.	O
</s>
<s>
The	O
wiki	O
,	O
containing	O
information	O
regarding	O
installation	O
,	O
support	O
,	O
and	O
development	O
of	O
LineageOS	B-Application
,	O
is	O
also	O
open	O
to	O
contributions	O
through	O
Gerrit	B-Language
.	O
</s>
<s>
Other	O
Lineage	O
platforms	O
include	O
Crowdin	O
for	O
managing	O
translations	O
,	O
Gitlab	B-Application
Issues	I-Application
for	O
bug	O
tracking	O
,	O
and	O
a	O
stats	O
page	O
,	O
which	O
displays	O
the	O
number	O
of	O
active	O
installations	O
from	O
users	O
who	O
opt	O
in	O
to	O
report	O
this	O
statistic	O
.	O
</s>
<s>
There	O
is	O
also	O
an	O
IRC	B-Protocol
channel	I-Protocol
hosted	O
on	O
Libera.chat	O
(	O
#lineageos	O
)	O
and	O
subreddit	B-Application
(	O
r/lineageos	O
)	O
.	O
</s>
<s>
The	O
XDA	B-Application
Developers	I-Application
forums	O
have	O
been	O
used	O
by	O
members	O
of	O
the	O
Lineage	O
community	O
since	O
the	O
software	O
's	O
inception	O
.	O
</s>
<s>
During	O
August	O
2017	O
the	O
LineageOS	B-Application
team	O
held	O
a	O
Summer	O
Survey	O
in	O
which	O
they	O
asked	O
users	O
for	O
feedback	O
to	O
improve	O
the	O
development	O
of	O
the	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
The	O
results	O
were	O
published	O
in	O
October	O
and	O
,	O
according	O
to	O
the	O
team	O
,	O
they	O
used	O
the	O
gathered	O
data	O
to	O
improve	O
the	O
upcoming	O
LineageOS	B-Application
15	O
release	O
.	O
</s>
<s>
As	O
a	O
response	O
to	O
one	O
of	O
the	O
main	O
suggestions	O
received	O
during	O
their	O
first	O
public	O
survey	O
,	O
LineageOS	B-Application
launched	O
a	O
section	O
on	O
their	O
blog	O
titled	O
"	O
LineageOS	B-Application
Engineering	O
Blog	O
"	O
where	O
Lineage	O
maintainers	O
and	O
developers	O
can	O
contribute	O
articles	O
discussing	O
advanced	O
technical	O
information	O
pertaining	O
to	O
Android	B-Application
development	O
.	O
</s>
<s>
LineageOS	B-Application
is	O
also	O
known	O
for	O
posting	O
a	O
"	O
regularly	O
irregular	O
review	O
"	O
on	O
its	O
blog	O
in	O
which	O
the	O
active	O
development	O
of	O
the	O
work	O
is	O
discussed	O
.	O
</s>
<s>
LineageOS	B-Application
includes	O
free	B-License
and	I-License
open-source	I-License
apps	O
:	O
</s>
<s>
Aperture	O
-	O
A	O
brand	O
new	O
camera	O
app	O
maintained	O
by	O
various	O
LineageOS	B-Application
developers	O
,	O
based	O
on	O
Google	B-Application
's	I-Application
library	O
.	O
</s>
<s>
It	O
replaced	O
Snap	O
and	O
Camera2	O
with	O
the	O
release	O
of	O
LineageOS	B-Application
20	O
.	O
</s>
<s>
Messaging	O
–	O
An	O
MMS/SMS	O
messaging	O
app	O
.	O
</s>
<s>
Gello	O
–	O
A	O
browser	O
based	O
on	O
Chromium	O
and	O
developed	O
by	O
CyanogenMod	B-Application
.	O
</s>
<s>
Although	O
they	O
are	O
not	O
included	O
in	O
LineageOS	B-Application
as	O
such	O
due	O
to	O
legal	O
issues	O
,	O
users	O
can	O
flash	O
the	O
normal	O
Google	B-Application
apps	O
,	O
including	O
the	B-Application
Google	I-Application
Play	O
Store	O
and	O
Play	O
Apps	O
,	O
with	O
a	O
Zip	B-General_Concept
package	I-General_Concept
,	O
usually	O
referred	O
to	O
as	O
gapps	B-Application
,	O
while	O
installing	O
LineageOS	B-Application
.	O
</s>
<s>
A	O
side	O
effect	O
of	O
using	O
LineageOS	B-Application
and	O
other	O
custom	O
roms	O
is	O
the	O
impact	O
on	O
SafetyNet	O
API	B-Application
.	O
</s>
<s>
Notable	O
examples	O
would	O
be	O
Netflix	O
,	O
which	O
is	O
hidden	O
on	O
the	O
Play	O
Store	O
,	O
and	O
Google	B-Application
Pay	O
,	O
which	O
checks	O
SafetyNet	O
each	O
time	O
the	O
app	O
is	O
used	O
.	O
</s>
<s>
Devices	O
running	O
LineageOS	B-Application
may	O
have	O
a	O
smaller	O
selection	O
of	O
usable	O
apps	O
in	O
the	O
Play	O
Store	O
as	O
a	O
result	O
of	O
these	O
checks	O
.	O
</s>
<s>
LineageOS	B-Application
can	O
be	O
made	O
to	O
work	O
with	O
apps	O
such	O
as	O
Netflix	O
and	O
Google	B-Application
Pay	O
by	O
installing	O
Magisk	O
and	O
certain	O
modules	O
designed	O
to	O
hide	O
the	O
bootloader	O
status	O
.	O
</s>
<s>
LineageOS	B-Application
offers	O
several	O
features	O
that	O
Android	B-Application
Open	I-Application
Source	I-Application
Project	I-Application
(	O
AOSP	O
)	O
does	O
not	O
include	O
.	O
</s>
<s>
Styles	O
–	O
Set	O
a	O
global	O
dark	O
or	O
light	O
theme	B-Application
mode	O
and	O
customize	O
accent	O
colors	O
.	O
</s>
<s>
The	O
profile	O
can	O
be	O
selected	O
either	O
manually	O
or	O
through	O
the	O
use	O
of	O
a	O
"	O
trigger	O
"	O
,	O
such	O
as	O
upon	O
connecting	O
to	O
a	O
specific	O
WiFi	O
access	O
point	O
,	O
connecting	O
to	O
a	O
Bluetooth	B-Protocol
device	O
,	O
or	O
tapping	O
an	O
NFC	O
tag	O
.	O
</s>
<s>
Custom	O
pattern	O
sizes	O
–	O
In	O
addition	O
to	O
Android	B-Application
's	O
3x3	O
pattern	O
size	O
,	O
a	O
4x4	O
,	O
5x5	O
or	O
6x6	O
size	O
can	O
be	O
used	O
.	O
</s>
<s>
LineageSDK	O
–	O
a	O
set	O
of	O
APIs	B-Application
for	O
app	O
developers	O
to	O
integrate	O
their	O
apps	O
with	O
LineageOS	B-Application
specific	O
features	O
such	O
as	O
System	O
Profiles	O
,	O
Styles	O
and	O
Weather	O
.	O
</s>
<s>
(	O
Optional	O
)	O
Root	O
–	O
Permit	O
apps	O
to	O
function	O
with	O
root	B-Application
access	I-Application
to	O
perform	O
advanced	O
tasks	O
.	O
</s>
<s>
This	O
requires	O
flashing	O
from	O
Recovery	O
either	O
LineageOS	B-Application
's	O
root	O
add-on	O
(	O
supported	O
until	O
version	O
16.0	O
)	O
or	O
a	O
third-party	O
implementation	O
such	O
as	O
Magisk	O
or	O
SuperSU	O
.	O
</s>
<s>
This	O
functionality	O
is	O
not	O
included	O
by	O
default	O
;	O
a	O
weather	O
provider	O
must	O
be	O
downloaded	O
from	O
the	O
LineageOS	B-Application
Downloads	O
website	O
.	O
</s>
<s>
As	O
LineageOS	B-Application
evolved	O
through	O
development	O
,	O
the	O
Trust	O
interface	O
was	O
introduced	O
for	O
all	O
the	O
LineageOS	B-Application
15.1	O
builds	O
released	O
since	O
12	O
June	O
2018	O
.	O
</s>
<s>
The	O
number	O
of	O
devices	O
supported	O
by	O
LineageOS	B-Application
has	O
increased	O
over	O
time	O
,	O
with	O
157	O
for	O
17.1	O
and	O
18.1	O
.	O
</s>
<s>
For	O
the	O
first	O
two	O
months	O
of	O
the	O
project	O
,	O
parallel	O
experimental	O
builds	O
were	O
also	O
produced	O
,	O
allowing	O
in-place	O
upgrades	O
from	O
previous	O
CyanogenMod	B-Application
installations	O
and	O
easing	O
migration	O
to	O
LineageOS	B-Application
.	O
</s>
<s>
In	O
2019	O
,	O
LineageOS	B-Application
development	O
builds	O
were	O
available	O
for	O
109	O
phone	O
models	O
with	O
over	O
2.8	O
million	O
active	O
installs	O
.	O
</s>
<s>
LineageOS	B-Application
was	O
criticized	O
for	O
a	O
deceptive	O
April	O
Fool	O
's	O
prank	O
included	O
with	O
some	O
April	O
2018	O
builds	O
.	O
</s>
<s>
During	O
the	O
first	O
week	O
of	O
April	O
2018	O
LineageOS	B-Application
released	O
new	O
builds	O
with	O
the	O
"	O
LOSGenuine	O
"	O
prank	O
that	O
informed	O
unaware	O
users	O
of	O
the	O
software	O
possibly	O
being	O
counterfeit	O
via	O
a	O
persistent	O
notification	O
(	O
which	O
could	O
not	O
be	O
disabled	O
unless	O
the	O
user	O
ran	O
the	O
following	O
command	O
in	O
a	O
root	O
shell	O
)	O
:	O
</s>
<s>
On	O
10	B-Application
April	O
2018	O
,	O
LineageOS	B-Application
team	O
director	O
ciwrl	O
issued	O
an	O
official	O
apology	O
for	O
the	O
deceptive	O
prank	O
.	O
</s>
<s>
LineageOS	B-Application
has	O
a	O
number	O
of	O
notable	O
forks	B-Application
:	O
</s>
<s>
Replicant	B-Application
intends	O
to	O
be	O
a	O
completely	O
free	B-Application
software	I-Application
variant	O
of	O
LineageOS	B-Application
,	O
with	O
all	O
kernel	B-Operating_System
blobs	O
and	O
non-free	O
drivers	O
removed	O
.	O
</s>
<s>
As	O
a	O
response	O
to	O
the	O
refusal	O
for	O
several	O
reasons	O
of	O
support	O
for	O
signature	O
spoofing	O
in	O
official	O
builds	O
,	O
a	O
LineageOS	B-Application
fork	B-Application
with	O
microG	B-Application
services	O
included	O
,	O
known	O
as	O
"	O
LineageOS	B-Application
for	O
microG	B-Application
"	O
,	O
was	O
created	O
.	O
</s>
<s>
The	O
project	O
ships	O
custom	O
builds	O
of	O
LineageOS	B-Application
with	O
the	O
required	O
patch	O
and	O
native	O
F-Droid	B-Application
support	O
,	O
bundled	O
with	O
the	O
MicroG	B-Application
project	O
's	O
free	B-Application
re-implementation	O
of	O
proprietary	B-Application
Gapps	B-Application
.	O
</s>
<s>
CalyxOS	B-Operating_System
is	O
a	O
privacy	O
and	O
security-focused	O
operating	B-General_Concept
system	I-General_Concept
for	O
smartphones	B-Application
,	O
based	O
on	O
Android	B-Application
Open	I-Application
Source	I-Application
Project	I-Application
(	O
AOSP	O
)	O
.	O
</s>
<s>
CalyxOS	B-Operating_System
makes	O
available	O
during	O
installation	O
optional	O
privacy-preserving	O
apps	O
such	O
as	O
Orbot	B-Language
,	O
Tor	B-Operating_System
Browser	I-Operating_System
,	O
Signal	B-Application
,	O
Calyx	O
VPN	O
,	O
Riseup	O
VPN	O
and	O
MicroG	B-Application
support	O
.	O
</s>
<s>
DivestOS	B-Application
is	O
a	O
soft	O
fork	B-Application
of	O
LineageOS	B-Application
that	O
aims	O
to	O
increase	O
security	O
and	O
privacy	O
,	O
and	O
support	O
older	O
devices	O
.	O
</s>
<s>
As	O
much	O
as	O
possible	O
it	O
removes	O
proprietary	B-Application
Android	B-Application
components	O
and	O
includes	O
only	O
free-software	B-Application
.	O
</s>
<s>
/e/	B-Application
is	O
a	O
fork	B-Application
of	O
LineageOS	B-Application
created	O
by	O
Gaël	O
Duval	O
that	O
is	O
intended	O
to	O
be	O
"	O
free	B-Application
from	O
Google	B-Application
"	O
.	O
</s>
<s>
It	O
replaces	O
Google	B-Application
Play	I-Application
Services	I-Application
with	O
microG	B-Application
,	O
a	O
free	B-License
and	I-License
open-source	I-License
implementation	O
of	O
Google	B-Application
APIs	B-Application
.	O
</s>
