<s>
FaceTime	B-Operating_System
is	O
a	O
proprietary	B-Application
videotelephony	B-Application
product	O
developed	O
by	O
Apple	O
Inc	O
.	O
FaceTime	B-Operating_System
is	O
available	O
on	O
supported	O
iOS	B-Application
mobile	O
devices	O
running	O
iOS	B-Operating_System
4	I-Operating_System
and	O
later	O
and	O
Mac	B-Device
computers	O
that	O
run	O
and	O
later	O
.	O
</s>
<s>
FaceTime	B-Operating_System
supports	O
any	O
iOS	B-Operating_System
device	I-Operating_System
with	O
a	O
forward-facing	O
camera	O
and	O
any	O
Mac	B-Device
computer	O
equipped	O
with	O
a	O
FaceTime	B-Operating_System
Camera	I-Operating_System
.	O
</s>
<s>
FaceTime	B-Operating_System
Audio	O
,	O
an	O
audio-only	O
version	O
,	O
is	O
available	O
on	O
any	O
iOS	B-Operating_System
device	I-Operating_System
that	O
supports	O
iOS	B-Operating_System
7	I-Operating_System
or	O
newer	O
,	O
and	O
any	O
Mac	B-Device
with	O
a	O
forward-facing	O
camera	O
running	O
OS	B-Operating_System
X	I-Operating_System
10.9.2	I-Operating_System
and	O
later	O
.	O
</s>
<s>
FaceTime	B-Operating_System
is	O
included	O
for	O
free	O
in	O
iOS	B-Application
and	O
macOS	B-Operating_System
from	O
(	O
10.7	B-Application
)	O
onwards	O
.	O
</s>
<s>
Since	O
the	O
release	O
of	O
iOS	B-Operating_System
15	I-Operating_System
,	O
iPadOS	B-Operating_System
15	I-Operating_System
,	O
and	O
macOS	B-Device
Monterey	I-Device
,	O
non-Apple	O
systems	O
can	O
be	O
used	O
to	O
participate	O
in	O
FaceTime	B-Operating_System
calls	O
using	O
a	O
web	B-Application
client	I-Application
.	O
</s>
<s>
Apple	O
bought	O
the	O
"	O
FaceTime	B-Operating_System
"	O
name	O
from	O
FaceTime	B-Operating_System
Communications	O
,	O
which	O
changed	O
its	O
name	O
to	O
Actiance	O
in	O
January	O
2011	O
.	O
</s>
<s>
On	O
June	O
7	O
,	O
2010	O
,	O
Apple	O
CEO	O
Steve	O
Jobs	O
announced	O
FaceTime	B-Operating_System
in	O
conjunction	O
with	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
in	O
a	O
keynote	O
speech	O
at	O
the	O
2010	O
Apple	O
Worldwide	O
Developers	O
Conference	O
.	O
</s>
<s>
Support	O
for	O
the	O
fourth	O
generation	O
iPod	B-Device
Touch	I-Device
(	O
the	O
first	O
model	O
of	O
iPod	B-Device
Touch	I-Device
equipped	O
with	O
cameras	O
)	O
was	O
announced	O
in	O
conjunction	O
with	O
the	O
device	O
's	O
release	O
on	O
September	O
8	O
,	O
2010	O
.	O
</s>
<s>
On	O
March	O
2	O
,	O
2011	O
,	O
FaceTime	B-Operating_System
support	O
was	O
announced	O
for	O
the	O
newly	O
introduced	O
iPad	B-Operating_System
2	I-Operating_System
,	O
which	O
had	O
forward	O
-	O
and	O
rear-facing	O
cameras	O
.	O
</s>
<s>
On	O
February	O
24	O
,	O
2011	O
,	O
FaceTime	B-Operating_System
left	O
beta	O
and	O
was	O
listed	O
in	O
the	O
Mac	B-Application
App	I-Application
Store	I-Application
for	O
US	O
$0.99	O
.	O
</s>
<s>
FaceTime	B-Operating_System
is	O
included	O
for	O
free	O
in	O
macOS	B-Operating_System
from	O
(	O
10.7	B-Application
)	O
onwards	O
and	O
iOS	B-Application
.	O
</s>
<s>
AT&T	O
allowed	O
customers	O
to	O
use	O
FaceTime	B-Operating_System
as	O
long	O
as	O
they	O
were	O
tiered	O
but	O
blocked	O
the	O
application	O
from	O
working	O
for	O
customers	O
with	O
unlimited	O
data	O
plans	O
.	O
</s>
<s>
In	O
May	O
2011	O
,	O
it	O
was	O
found	O
that	O
FaceTime	B-Operating_System
would	O
work	O
seamlessly	O
over	O
3G	B-Architecture
on	O
all	O
iPhone	B-Operating_System
,	O
iPad	B-Operating_System
,	O
and	O
iPod	B-Device
Touch	I-Device
models	O
that	O
supported	O
it	O
.	O
</s>
<s>
Even	O
though	O
FaceTime	B-Operating_System
worked	O
only	O
over	O
3G	B-Architecture
at	O
that	O
time	O
,	O
it	O
now	O
supports	O
4G	O
LTE	O
calls	O
on	O
networks	O
all	O
over	O
the	O
world	O
,	O
and	O
availability	O
is	O
limited	O
to	O
operators	O
 '	O
GSM	O
plans	O
.	O
</s>
<s>
In	O
2018	O
,	O
Apple	O
added	O
group	O
video	O
and	O
audio	O
support	O
to	O
FaceTime	B-Operating_System
which	O
can	O
support	O
up	O
to	O
32	O
people	O
in	O
iOS	B-Operating_System
12	I-Operating_System
and	O
macOS	B-Device
Mojave	I-Device
.	O
</s>
<s>
On	O
June	O
7	O
,	O
2021	O
,	O
during	O
Apple	O
's	O
WWDC	O
Keynote	O
,	O
it	O
was	O
announced	O
that	O
FaceTime	B-Operating_System
will	O
be	O
made	O
available	O
for	O
Android	O
and	O
Windows	O
users	O
via	O
the	O
web	B-Application
.	O
</s>
<s>
A	O
new	O
feature	O
called	O
SharePlay	O
was	O
announced	O
for	O
FaceTime	B-Operating_System
on	O
iOS	B-Operating_System
15	I-Operating_System
,	O
iPadOS	B-Operating_System
15	I-Operating_System
,	O
and	O
macOS	B-Device
Monterey	I-Device
at	O
the	O
same	O
event	O
.	O
</s>
<s>
It	O
will	O
let	O
users	O
on	O
iPhone	B-Operating_System
,	O
iPad	B-Operating_System
,	O
and	O
Mac	B-Device
share	O
music	O
,	O
video	O
,	O
or	O
their	O
screen	O
with	O
people	O
on	O
the	O
call	O
.	O
</s>
<s>
Apple	O
stated	O
that	O
the	O
feature	O
uses	O
an	O
API	B-General_Concept
that	O
can	O
be	O
enabled	O
on	O
any	O
media	O
service	O
and	O
SharePlay	O
is	O
slated	O
to	O
support	O
Apple	B-Operating_System
Music	I-Operating_System
,	O
the	O
Apple	B-Operating_System
TV	I-Operating_System
app	I-Operating_System
(	O
including	O
Apple	O
TV+	O
)	O
,	O
Disney+	B-Application
,	O
Hulu	B-Application
,	O
HBO	B-Application
Max	I-Application
,	O
Paramount+	B-Application
,	O
TikTok	B-Application
,	O
Twitch	O
,	O
and	O
several	O
other	O
media	O
sources	O
at	O
launch	O
.	O
</s>
<s>
FaceTime	B-Operating_System
works	O
by	O
establishing	O
a	O
connection	O
between	O
two	O
supported	O
devices	O
.	O
</s>
<s>
Most	O
Apple	B-Operating_System
devices	I-Operating_System
(	O
such	O
as	O
iPhones	B-Operating_System
,	O
iPads	B-Operating_System
,	O
and	O
Macs	O
)	O
introduced	O
after	O
2011	O
support	O
FaceTime	B-Operating_System
.	O
</s>
<s>
FaceTime	B-Operating_System
is	O
currently	O
incompatible	O
with	O
non-Apple	O
devices	O
or	O
any	O
other	O
video	B-Application
calling	I-Application
services	O
.	O
</s>
<s>
Mac	B-Device
models	O
introduced	O
in	O
2011	O
have	O
high-definition	O
video	O
FaceTime	B-Operating_System
,	O
which	O
devices	O
use	O
automatically	O
when	O
both	O
ends	O
have	O
a	O
FaceTime	B-Operating_System
HD	O
camera	O
.	O
</s>
<s>
At	O
launch	O
,	O
unlike	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
's	O
iChat	B-Protocol
,	O
FaceTime	B-Operating_System
did	O
not	O
support	O
group	O
conferencing	O
.	O
</s>
<s>
The	O
application	O
allowed	O
a	O
one-on-one	O
video	B-Application
chat	I-Application
—	O
only	O
two	O
people	O
could	O
talk	O
at	O
once	O
.	O
</s>
<s>
If	O
a	O
second	O
user	O
called	O
and	O
the	O
user	O
answered	O
,	O
the	O
video	B-Application
chat	I-Application
with	O
the	O
previous	O
user	O
would	O
end	O
and	O
a	O
new	O
video	O
session	O
began	O
with	O
the	O
second	O
caller	O
.	O
</s>
<s>
In	O
iPhone	B-Operating_System
,	O
if	O
a	O
phone	O
call	O
was	O
pending	O
and	O
the	O
user	O
attempts	O
to	O
answer	O
,	O
the	O
video	B-Application
call	I-Application
ends	O
and	O
the	O
phone	O
call	O
began	O
with	O
the	O
next	O
user	O
.	O
</s>
<s>
Support	O
for	O
group	O
video	B-Application
conferencing	I-Application
was	O
added	O
with	O
the	O
release	O
of	O
iOS	B-Operating_System
12	I-Operating_System
,	O
allowing	O
up	O
to	O
32	O
people	O
to	O
participate	O
in	O
a	O
video	B-Application
call	I-Application
simultaneously	O
.	O
</s>
<s>
Incoming	O
notifications	O
on	O
iOS	B-Operating_System
devices	I-Operating_System
are	O
shown	O
during	O
a	O
FaceTime	B-Operating_System
call	O
,	O
but	O
if	O
they	O
are	O
opened	O
,	O
the	O
video	O
will	O
be	O
temporarily	O
paused	O
until	O
the	O
user	O
is	O
back	O
in	O
the	O
FaceTime	B-Operating_System
app	O
.	O
</s>
<s>
On	O
the	O
iPhone	B-Operating_System
,	O
a	O
user	O
can	O
activate	O
FaceTime	B-Operating_System
during	O
a	O
phone	O
call	O
by	O
pressing	O
the	O
FaceTime	B-Operating_System
button	O
or	O
initiating	O
FaceTime	B-Operating_System
from	O
their	O
call	O
history	O
or	O
the	O
Contacts	O
application	O
.	O
</s>
<s>
iOS	B-Operating_System
7	I-Operating_System
and	O
newer	O
also	O
provide	O
a	O
separate	O
FaceTime	B-Operating_System
app	O
,	O
as	O
there	O
always	O
has	O
been	O
on	O
Apple	O
's	O
non-telephony	O
devices	O
:	O
iPad	B-Operating_System
,	O
iPod	B-Device
Touch	I-Device
,	O
and	O
Mac	B-Device
.	O
</s>
<s>
Until	O
the	O
release	O
of	O
iOS	B-Application
6	O
,	O
FaceTime	B-Operating_System
required	O
a	O
WiFi	O
connection	O
to	O
work	O
.	O
</s>
<s>
From	O
iOS	B-Application
6	O
onwards	O
,	O
FaceTime	B-Operating_System
for	O
the	O
iPhone	B-Operating_System
and	O
iPad	B-Operating_System
has	O
supported	O
FaceTime	B-Operating_System
calls	O
over	O
cellular	O
networks	O
(	O
3G	B-Architecture
or	O
LTE	O
)	O
provided	O
the	O
carrier	O
enabled	O
it	O
,	O
which	O
by	O
mid-2013	O
virtually	O
all	O
carriers	O
worldwide	O
have	O
allowed	O
.	O
</s>
<s>
FaceTime	B-Operating_System
Audio	O
uses	O
about	O
three	O
megabytes	O
of	O
data	O
for	O
every	O
five	O
minutes	O
of	O
conversation	O
,	O
with	O
FaceTime	B-Operating_System
Video	I-Operating_System
uses	O
significantly	O
more	O
.	O
</s>
<s>
Cellular	O
talk	O
time/minutes	O
are	O
not	O
used	O
after	O
switching	O
from	O
a	O
voice	O
call	O
to	O
a	O
FaceTime	B-Operating_System
call	O
.	O
</s>
<s>
FaceTime	B-Operating_System
calls	O
can	O
be	O
placed	O
from	O
supported	O
devices	O
to	O
any	O
phone	O
number	O
or	O
email	O
address	O
that	O
is	O
registered	O
to	O
the	O
FaceTime	B-Operating_System
service	O
.	O
</s>
<s>
The	O
FaceTime	B-Operating_System
protocol	O
is	O
based	O
on	O
numerous	O
open	O
industry	O
standards	O
but	O
is	O
not	O
interoperable	O
with	O
non-Apple	O
products	O
.	O
</s>
<s>
FaceTime	B-Operating_System
's	O
lack	O
of	O
interoperability	O
makes	O
customers	O
dependent	O
on	O
Apple	O
and	O
unable	O
to	O
switch	O
away	O
from	O
Apple	O
products	O
.	O
</s>
<s>
Upon	O
the	O
launch	O
of	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
,	O
Jobs	O
stated	O
that	O
Apple	O
would	O
immediately	O
start	O
working	O
with	O
standards	O
bodies	O
to	O
make	O
the	O
FaceTime	B-Operating_System
protocol	O
an	O
"	O
open	O
industry	O
standard	O
"	O
.	O
</s>
<s>
While	O
the	O
protocols	O
are	O
open	O
standards	O
,	O
Apple	O
's	O
FaceTime	B-Operating_System
service	O
requires	O
a	O
client-side	O
certificate	O
.	O
</s>
<s>
FaceTime	B-Operating_System
calls	O
are	O
protected	O
by	O
end-to-end	O
encryption	O
so	O
that	O
only	O
the	O
sender	O
and	O
receiver	O
can	O
access	O
them	O
.	O
</s>
<s>
H.264	B-Application
and	O
AAC-ELD	O
–	O
video	O
and	O
audio	O
codecs	B-General_Concept
respectively	O
.	O
</s>
<s>
SIP	B-Application
–	O
IETF	O
signaling	O
protocol	O
for	O
VoIP	B-Application
.	O
</s>
<s>
STUN	B-Protocol
,	O
TURN	B-Protocol
,	O
and	O
ICE	O
–	O
IETF	O
technologies	O
for	O
traversing	O
firewalls	B-Application
and	O
NAT	B-Protocol
.	O
</s>
<s>
RTP	B-Protocol
and	O
SRTP	B-Protocol
–	O
IETF	O
standards	O
for	O
delivering	O
real-time	O
and	O
encrypted	O
media	O
streams	O
for	O
VoIP	B-Application
.	O
</s>
<s>
Compared	O
to	O
most	O
SIP	B-Application
implementations	O
,	O
Facetime	B-Operating_System
adds	O
techniques	O
that	O
enhance	O
performance	O
at	O
the	O
cost	O
of	O
breaking	O
interoperability	O
:	O
port	O
multiplexing	O
,	O
SDP	B-Language
minimization	O
,	O
and	O
SDP	B-Language
compression	O
.	O
</s>
<s>
A	O
new	O
audio-only	O
version	O
of	O
FaceTime	B-Operating_System
,	O
named	O
FaceTime	B-Operating_System
Audio	O
,	O
was	O
announced	O
during	O
the	O
annual	O
Apple	O
Worldwide	O
Developers	O
Conference	O
(	O
WWDC	O
)	O
keynote	O
speech	O
on	O
June	O
10	O
,	O
2013	O
,	O
and	O
released	O
with	O
iOS	B-Operating_System
7	I-Operating_System
on	O
September	O
18	O
,	O
2013	O
.	O
</s>
<s>
As	O
an	O
audio-only	O
version	O
of	O
FaceTime	B-Operating_System
,	O
it	O
effectively	O
makes	O
the	O
protocol	O
into	O
a	O
voice-over-Internet	B-Application
Protocol	I-Application
(	O
VoIP	B-Application
)	O
,	O
that	O
competes	O
with	O
other	O
mainstream	O
providers	O
in	O
the	O
field	O
,	O
including	O
Skype	B-Application
(	O
Microsoft	O
)	O
.	O
</s>
<s>
Based	O
on	O
the	O
same	O
AAC-LD	B-Algorithm
audio	O
protocol	O
,	O
the	O
service	O
provides	O
high-quality	O
audio	O
.	O
</s>
<s>
The	O
iOS	B-Operating_System
7	I-Operating_System
betas	O
limited	O
FaceTime	B-Operating_System
Audio	O
to	O
calls	O
placed	O
on	O
a	O
Wi-Fi	O
network	O
(	O
the	O
same	O
original	O
limitation	O
of	O
the	O
video	O
version	O
of	O
FaceTime	B-Operating_System
)	O
,	O
but	O
the	O
final	O
release	O
has	O
removed	O
that	O
restriction	O
to	O
allow	O
it	O
to	O
work	O
over	O
3G	B-Architecture
and	O
LTE	O
data	O
connections	O
,	O
as	O
is	O
the	O
case	O
with	O
most	O
carriers	O
and	O
plans	O
about	O
FaceTime	B-Operating_System
with	O
video	O
.	O
</s>
<s>
Like	O
the	O
video	O
version	O
,	O
FaceTime	B-Operating_System
Audio	O
is	O
currently	O
only	O
available	O
between	O
Apple	B-Operating_System
devices	I-Operating_System
on	O
iOS	B-Operating_System
7	I-Operating_System
and	O
later	O
.	O
</s>
<s>
FaceTime	B-Operating_System
streaming	O
over	O
cellular	O
data	O
is	O
unavailable	O
for	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
and	O
the	O
iPad	B-Operating_System
2	I-Operating_System
.	O
</s>
<s>
Walkie-Talkie	B-Application
is	O
a	O
limited	O
FaceTime	B-Operating_System
Audio-based	O
communication	O
feature	O
made	O
available	O
on	O
September	O
17	O
,	O
2018	O
,	O
for	O
Apple	B-Device
Watch	I-Device
devices	O
running	O
watchOS	B-Device
5.0	O
or	O
later	O
.	O
</s>
<s>
The	O
application	O
allows	O
users	O
to	O
have	O
two-person	O
calls	O
similar	O
to	O
using	O
a	O
real	O
walkie-talkie	B-Application
,	O
as	O
conversations	O
are	O
push-to-talk	O
and	O
only	O
one	O
end	O
of	O
the	O
conversation	O
can	O
speak	O
at	O
a	O
time	O
.	O
</s>
<s>
Walkie-Talkie	B-Application
is	O
intended	O
for	O
short	O
and	O
quick	O
messages	O
between	O
two	O
people	O
rather	O
than	O
long	O
conversations	O
which	O
are	O
better	O
suited	O
for	O
traditional	O
phone	O
or	O
video	B-Application
calls	I-Application
.	O
</s>
<s>
Users	O
can	O
set	O
their	O
availability	O
for	O
walkie-talkie	B-Application
through	O
the	O
control	O
panel	O
or	O
in	O
the	O
app	O
itself	O
,	O
which	O
allows	O
friends	O
to	O
start	O
a	O
call	O
at	O
any	O
time	O
.	O
</s>
<s>
In	O
July	O
2019	O
,	O
Apple	O
temporarily	O
disabled	O
the	O
Walkie-Talkie	B-Application
feature	O
from	O
all	O
Apple	B-Device
Watches	I-Device
after	O
a	O
vulnerability	O
was	O
discovered	O
that	O
allowed	O
a	O
user	O
to	O
listen	O
to	O
another	O
person	O
's	O
iPhone	B-Operating_System
without	O
consent	O
.	O
</s>
<s>
,	O
FaceTime	B-Operating_System
was	O
not	O
enabled	O
on	O
devices	O
bought	O
in	O
the	O
United	O
Arab	O
Emirates	O
possibly	O
due	O
to	O
regulations	O
in	O
this	O
country	O
that	O
restrict	O
IP-based	O
communications	O
.	O
</s>
<s>
FaceTime	B-Operating_System
is	O
made	O
available	O
for	O
iPhones	B-Operating_System
in	O
the	O
United	O
Arab	O
Emirates	O
upon	O
updating	O
iOS	B-Application
13.6	O
.	O
</s>
<s>
In	O
addition	O
,	O
iPhone	B-Operating_System
and	O
iPad	B-Operating_System
(	O
Cellular	O
models	O
)	O
devices	O
bought	O
in	O
mainland	O
China	O
have	O
FaceTime	B-Operating_System
Audio	O
,	O
Group	O
FaceTime	B-Operating_System
,	O
and	O
the	O
ability	O
to	O
create	O
and	O
join	O
FaceTime	B-Operating_System
links	O
via	O
the	O
FaceTime	B-Operating_System
app	O
disabled	O
,	O
while	O
FaceTime	B-Operating_System
Video	I-Operating_System
is	O
available	O
.	O
</s>
<s>
Devices	O
bought	O
outside	O
these	O
countries	O
support	O
both	O
video	O
and	O
audio	O
versions	O
of	O
FaceTime	B-Operating_System
.	O
</s>
<s>
Although	O
Egypt	O
,	O
Jordan	O
,	O
Qatar	O
,	O
and	O
Kuwait	O
originally	O
disabled	O
FaceTime	B-Operating_System
on	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
,	O
they	O
later	O
re-enabled	O
the	O
feature	O
through	O
a	O
carrier	O
update	O
for	O
existing	O
phone	O
owners	O
and	O
made	O
it	O
pre-enabled	O
on	O
any	O
newly	O
purchased	O
iPhone	B-Operating_System
.	O
</s>
<s>
In	O
March	O
2018	O
,	O
FaceTime	B-Operating_System
was	O
made	O
available	O
for	O
iPhones	B-Operating_System
in	O
Saudi	O
Arabia	O
upon	O
updating	O
to	O
iOS	B-Application
11.3	O
,	O
and	O
in	O
August	O
2019	O
,	O
FaceTime	B-Operating_System
was	O
made	O
available	O
for	O
iPhones	B-Operating_System
in	O
Pakistan	O
upon	O
updating	O
to	O
iOS	B-Operating_System
12.4	I-Operating_System
.	O
</s>
<s>
As	O
of	O
April	O
16	O
,	O
2014	O
,	O
FaceTime	B-Operating_System
ceased	O
working	O
on	O
earlier	O
versions	O
of	O
iOS	B-Application
that	O
had	O
previously	O
supported	O
it	O
(	O
iOS	B-Operating_System
4	I-Operating_System
and	O
later	O
)	O
,	O
due	O
to	O
the	O
client-side	O
certificate	O
used	O
to	O
authenticate	O
a	O
genuine	O
Apple	B-Operating_System
device	I-Operating_System
with	O
FaceTime	B-Operating_System
servers	O
(	O
amongst	O
other	O
uses	O
)	O
expiring	O
on	O
that	O
date	O
.	O
</s>
<s>
Apple	O
chose	O
not	O
to	O
release	O
an	O
update	O
to	O
this	O
certificate	O
for	O
all	O
devices	O
for	O
which	O
a	O
newer	O
major	O
iOS	B-Application
version	O
(	O
with	O
a	O
new	O
,	O
valid	O
certificate	O
)	O
was	O
available	O
.	O
</s>
<s>
Apple	O
did	O
release	O
a	O
minor	O
update	O
,	O
to	O
the	O
certificate	O
only	O
,	O
for	O
all	O
OS	B-Operating_System
X	I-Operating_System
versions	O
which	O
could	O
run	O
FaceTime	B-Operating_System
,	O
and	O
also	O
for	O
the	O
4th	O
generation	O
iPod	B-Device
Touch	I-Device
,	O
the	O
only	O
iOS	B-Operating_System
device	I-Operating_System
which	O
could	O
run	O
FaceTime	B-Operating_System
but	O
could	O
not	O
run	O
the	O
then-latest	O
iOS	B-Operating_System
7	I-Operating_System
.	O
</s>
<s>
The	O
result	O
of	O
this	O
policy	O
was	O
that	O
almost	O
all	O
iOS	B-Application
users	O
had	O
to	O
update	O
the	O
iOS	B-Application
version	O
on	O
their	O
devices	O
if	O
they	O
wished	O
to	O
continue	O
using	O
FaceTime	B-Operating_System
.	O
</s>
<s>
On	O
January	O
28	O
,	O
2019	O
,	O
a	O
bug	O
was	O
discovered	O
in	O
the	O
FaceTime	B-Operating_System
app	O
that	O
allowed	O
users	O
to	O
eavesdrop	O
on	O
other	O
users	O
without	O
their	O
knowledge	O
through	O
an	O
exploit	O
.	O
</s>
<s>
Apple	O
said	O
in	O
a	O
statement	O
that	O
it	O
would	O
release	O
a	O
fix	O
for	O
the	O
exploit	O
shortly	O
,	O
disabling	O
Group	O
FaceTime	B-Operating_System
for	O
the	O
time	O
being	O
.	O
</s>
<s>
The	O
bug	O
was	O
named	O
"	O
FacePalm	O
"	O
by	O
security	O
researchers	O
,	O
and	O
affects	O
iOS	B-Operating_System
devices	I-Operating_System
running	O
FaceTime	B-Operating_System
on	O
iOS	B-Operating_System
12.1	I-Operating_System
or	O
Mac	B-Device
computers	O
running	O
macOS	B-Device
Mojave	I-Device
10.14.1	O
.	O
</s>
<s>
On	O
February	O
7	O
,	O
Apple	O
fixed	O
the	O
FaceTime	B-Operating_System
vulnerabilities	O
in	O
iOS	B-Operating_System
12.1.4	I-Operating_System
and	O
a	O
Supplemental	O
Update	O
for	O
macOS	B-Device
Mojave	I-Device
10.14.3	O
.	O
</s>
