<s>
A	O
Tor	B-Application
Phone	I-Application
refers	O
to	O
the	O
concept	O
of	O
a	O
smartphone	B-Application
that	O
routes	O
internet	O
connections	O
through	O
the	O
Tor	B-Application
network	I-Application
.	O
</s>
<s>
The	O
first	O
Tor	B-Application
Phone	I-Application
was	O
a	O
prototype	O
smartphone	B-Application
released	O
in	O
2016	O
by	O
The	O
Tor	B-Application
Project	I-Application
,	O
which	O
gave	O
users	O
the	O
ability	O
to	O
route	O
internet	O
connections	O
through	O
Tor	B-Application
for	O
anonymity	O
.	O
</s>
<s>
Work	O
on	O
Tor	B-Application
Phone	I-Application
was	O
launched	O
in	O
2014	O
,	O
and	O
a	O
"	O
Tor-enabled	O
Android	B-Application
phone	I-Application
prototype	O
"	O
was	O
announced	O
in	O
2016	O
.	O
</s>
<s>
The	O
project	O
was	O
led	O
by	O
Mike	O
Perry	O
,	O
Tor	B-Application
Browser	O
lead	O
developer	O
.	O
</s>
<s>
Tor	B-Application
Phone	I-Application
refers	O
to	O
a	O
smartphone	B-Application
set	O
to	O
route	O
internet	O
connections	O
through	O
Tor	B-Application
network	I-Application
,	O
for	O
example	O
using	O
the	O
Orbot	B-Language
application	O
and	O
Android	B-Application
VPN	B-Application
settings	O
,	O
although	O
according	O
to	O
developer	O
Mike	O
Perry	O
in	O
2016	O
,	O
Android	B-Application
's	O
VPN	B-Application
APIs	O
were	O
not	O
secure	O
and	O
could	O
leak	O
data	O
at	O
boot	O
,	O
which	O
affects	O
Orbot	B-Language
too	O
.	O
</s>
<s>
The	O
prototype	O
Tor	B-Application
Phone	I-Application
was	O
based	O
on	O
CopperheadOS	B-Application
,	O
which	O
added	O
additional	O
security	O
features	O
.	O
</s>
<s>
Another	O
option	O
is	O
to	O
use	O
Torbrowser	O
on	O
smartphones	B-Application
.	O
</s>
<s>
Follow-on	O
project	O
,	O
GrapheneOS	B-Operating_System
supports	O
using	O
Orbot	B-Language
(	O
Tor	B-Application
)	O
VPN	B-Application
,	O
but	O
not	O
Tor	B-Application
browser	O
,	O
on	O
Android-based	O
phones	O
.	O
</s>
<s>
As	O
of	O
February	O
2022	O
or	O
earlier	O
,	O
Orbot	B-Language
is	O
also	O
available	O
for	O
iOS	B-Application
phones	O
.	O
</s>
<s>
The	O
number	O
of	O
Tor	B-Application
users	O
on	O
phones	O
is	O
unknown	O
.	O
</s>
<s>
As	O
of	O
2016	O
there	O
were	O
about	O
2	O
million	O
daily	O
Tor	B-Application
users	O
,	O
total	O
,	O
including	O
all	O
devices	O
and	O
methods	O
.	O
</s>
<s>
In	O
2018	O
Louis	O
Adam	O
of	O
ZDNet	O
France	O
discussed	O
new	O
official	O
support	O
of	O
Tor	B-Application
Project	I-Application
for	O
Tor	B-Application
services	O
on	O
Android	B-Application
phones	I-Application
,	O
including	O
Tor	B-Application
Browser	O
and	O
Orbot	B-Language
.	O
</s>
<s>
John	O
Corpuz	O
of	O
Toms	O
Guide	O
listed	O
Tor	B-Application
Browser	O
(	O
Desktop	O
and	O
Android	B-Application
)	O
,	O
and	O
Onion	O
Browser	O
(	O
iOS	B-Application
)	O
as	O
two	O
of	O
16	O
"	O
best	O
ad	O
blockers	O
in	O
2021	O
"	O
.	O
</s>
<s>
Using	O
Tor	B-Application
with	O
Orbot	B-Language
and	O
Tor	B-Application
Browser	O
are	O
supported	O
by	O
custom	O
Android	B-Application
operating	I-Application
systems	I-Application
CalyxOS	B-Operating_System
and	O
DivestOS	B-Application
.	O
</s>
<s>
In	O
January	O
2015	O
David	O
Briggs	O
and	O
Nick	O
Spriggs	O
began	O
an	O
unsuccessful	O
Indiegogo	O
campaign	O
to	O
make	O
the	O
BOSS	O
phone	O
,	O
an	O
Android-based	O
phone	O
with	O
"	O
rooted	O
Tor	B-Application
encryption	O
"	O
to	O
anonymize	O
and	O
privatize	O
internet	O
browsing	O
.	O
</s>
<s>
In	O
2014	O
Blackphone	B-Application
from	O
Silent	O
Circle	O
was	O
sold	O
as	O
an	O
Android-based	O
phone	O
with	O
applications	O
and	O
services	O
to	O
provide	O
more	O
secure	O
messaging	O
,	O
VPN	B-Application
and	O
cloud	O
storage	O
.	O
</s>
<s>
In	O
2014	O
the	O
Boeing	B-Application
Black	I-Application
phone	O
was	O
advertised	O
as	O
a	O
more	O
secure	O
Android-based	O
phone	O
,	O
with	O
dual-Sim	O
for	O
using	O
public	O
and	O
government	O
networks	O
.	O
</s>
<s>
In	O
2014	O
a	O
mobile	O
version	O
of	O
TAILS	B-Application
operating	I-Application
system	I-Application
was	O
announced	O
.	O
</s>
<s>
In	O
2012	O
the	O
Ninja	O
phone	O
,	O
an	O
HTC	O
One	O
V	O
phone	O
running	O
Android	B-Application
4.0.3	O
,	O
was	O
developed	O
to	O
demonstrate	O
using	O
an	O
independent	O
GSM	O
phone	O
network	O
at	O
DefCon	O
.	O
</s>
