<s>
iPhone	B-Operating_System
OS	I-Operating_System
1	I-Operating_System
(	O
officially	O
:	O
iPhone	B-Operating_System
Software	I-Operating_System
;	O
unofficially	O
retronym	O
:	O
iOS	B-Operating_System
1	I-Operating_System
)	O
,	O
is	O
the	O
first	B-Operating_System
major	O
release	O
of	O
iOS	B-Application
,	O
Apple	O
's	O
mobile	O
operating	O
system	O
.	O
</s>
<s>
No	O
official	O
name	O
was	O
given	O
on	O
its	O
initial	O
release	O
;	O
Apple	O
marketing	O
literature	O
simply	O
stated	O
that	O
the	O
iPhone	B-Operating_System
runs	O
a	O
version	O
of	O
Apple	O
's	O
desktop	O
operating	O
system	O
,	O
OS	O
X	O
(	O
later	O
known	O
as	O
macOS	O
)	O
.	O
</s>
<s>
On	O
March	O
6	O
,	O
2008	O
,	O
with	O
the	O
release	O
of	O
the	O
iPhone	B-Operating_System
software	I-Operating_System
development	I-Operating_System
kit	I-Operating_System
(	O
iPhone	B-Operating_System
SDK	I-Operating_System
)	O
,	O
Apple	O
named	O
it	O
iPhone	B-Operating_System
OS	O
.	O
</s>
<s>
It	O
was	O
succeeded	O
by	O
iPhone	B-Operating_System
OS	I-Operating_System
2	I-Operating_System
on	O
July	O
11	O
,	O
2008	O
.	O
</s>
<s>
Development	O
of	O
iPhone	B-Operating_System
OS	I-Operating_System
1	I-Operating_System
and	O
the	O
first	B-Operating_System
generation	O
of	O
iPhone	B-Operating_System
Hardware	O
was	O
a	O
combined	O
effort	O
.	O
</s>
<s>
Only	O
employees	O
from	O
within	O
Apple	O
were	O
allowed	O
to	O
be	O
a	O
part	O
of	O
the	O
iPhone	B-Operating_System
development	O
team	O
.	O
</s>
<s>
There	O
were	O
two	O
teams	O
inside	O
Apple	O
that	O
worked	O
on	O
creating	O
the	O
iPhone	B-Operating_System
:	O
one	O
worked	O
on	O
converting	O
the	O
iPod	B-Operating_System
into	O
a	O
phone	O
and	O
the	O
other	O
worked	O
on	O
compressing	O
the	O
Mac	O
OS	O
X	O
to	O
make	O
it	O
work	O
on	O
smaller	O
devices	O
like	O
phones	O
.	O
</s>
<s>
A	O
team	O
led	O
by	O
Jon	O
Rubinstein	O
worked	O
on	O
developing	O
a	O
lightweight	O
Linux-based	O
version	O
,	O
commonly	O
referred	O
to	O
as	O
Acorn	O
,	O
while	O
another	O
team	O
led	O
by	O
Scott	O
Forstall	O
worked	O
on	O
developing	O
a	O
more	O
compressed	O
and	O
streamlined	O
version	O
of	O
the	O
Mac	O
OS	O
X	O
,	O
codenamed	O
purple	O
,	O
to	O
run	O
on	O
the	O
ARM	O
chipset	O
.	O
</s>
<s>
Tony	O
Fadell	O
,	O
who	O
then	O
led	O
the	O
iPhone	B-Operating_System
team	O
said	O
"	O
It	O
was	O
a	O
competing	O
set	O
of	O
ideas	O
,	O
not	O
teams	O
,	O
and	O
we	O
were	O
all	O
working	O
on	O
it	O
"	O
There	O
were	O
16	O
to	O
17	O
different	O
concepts	O
.	O
</s>
<s>
iPhone	B-Operating_System
OS	I-Operating_System
1	I-Operating_System
was	O
introduced	O
at	O
the	O
Macworld	O
Conference	O
&	O
Expo	O
at	O
the	O
Moscone	O
Convention	O
Center	O
in	O
San	O
Francisco	O
,	O
with	O
keynote	O
address	O
by	O
Steve	O
Jobs	O
on	O
January	O
9	O
,	O
2007	O
,	O
along	O
with	O
the	O
original	B-Operating_System
iPhone	I-Operating_System
.	O
</s>
<s>
At	O
the	O
time	O
,	O
Jobs	O
only	O
said	O
the	O
iPhone	B-Operating_System
ran	O
"	O
OS	O
X	O
"	O
.	O
</s>
<s>
iPhone	B-Operating_System
OS	I-Operating_System
1.0	I-Operating_System
was	O
released	O
,	O
alongside	O
the	O
iPhone	B-Operating_System
,	O
on	O
June	O
29	O
,	O
2007	O
.	O
</s>
<s>
iPhone	B-Operating_System
OS	I-Operating_System
1	I-Operating_System
did	O
not	O
have	O
the	O
App	B-Application
Store	I-Application
or	O
a	O
Software	B-Application
Development	I-Application
Kit	I-Application
(	O
SDK	O
)	O
for	O
third-party	O
developers	O
to	O
create	O
native	O
applications	O
.	O
</s>
<s>
Instead	O
,	O
Apple	O
directed	O
developers	O
to	O
create	O
web	B-Application
apps	I-Application
which	O
could	O
be	O
accessed	O
from	O
Safari	B-Application
.	O
</s>
<s>
+VersionBuildCodenameRelease	O
dateNotesSupported	O
device(s )	O
Update	O
type1.01A543aHeavenlyJune	O
29	O
,	O
2007Initial	O
release	O
for	O
iPhone	B-Operating_System
(	O
1st	O
generation	O
)	O
.	O
</s>
<s>
Fixes	O
a	O
URL	O
spoofing	O
bugiPhone	O
(	O
1st	O
generation	O
)	O
Bug	O
Fixes1.0.21C28August	O
21	O
,	O
2007Bug	O
fixesiPhone	O
(	O
1st	O
generation	O
)	O
Bug	O
Fixes1.13A101aSnowbirdSeptember	O
14	O
,	O
2007Initial	O
release	O
on	O
iPod	B-Device
Touch	I-Device
(	O
1st	O
generation	O
)	O
.	O
</s>
