Photo browsing

 Photo browsing, web browsing, and music playing support both upright and left or right widescreen orientations.


Unlike the iPad, the iPhone does not rotate the screen when turned upside-down, with the Home button above the screen, unless the running program has been specifically designed to do so

. The 3.0 update added landscape support for still other applications, such as email, and introduced shaking the unit as a form of input.



Furthermore, accelerometer can also be used to control third-party apps, notably games.

 The iPhone 4 also includes a gyroscopic sensor, enhancing its perception of how it is moved.


A software update in January 2008 allowed the 1st-generation iPhone to use cell tower and Wi-Fi network locations trilateration, despite lacking GPS hardware.

 The iPhone 3G, 3GS and 4 employ A-GPS, and the iPhone 3GS and four also have a digital compass. iPhone four S supports GLONASS global positioning system in addition to GPS.
Audio and output


One of two speakers (left) and the microphone (right) surround the dock connector on the base of the original iPhone. If a headset is plugged in, sound is played through it instead.



On the bottom of the iPhone there is a speaker to the left of the dock connector and a microphone to the right.

 There is an additional loudspeaker above the screen that serves as an earpiece during phone calls. The iPhone four includes an additional microphone at the top of the unit for noise cancellation, and switches the placement of the microphone and speaker on the base on the unit—the speaker is on the right.


 Volume controls are located on the left side of all iPhone models and as a slider in the iPod application.
The 3.5 mm TRRS connector for the headphones is located on the top left corner of the device.

The headphone socket on the original iPhone is recessed into the casing, making it incompatible with most headsets without the use of an adapter.

 Subsequent generations eliminated the issue by using a flush-mounted headphone socket.

 Cars equipped with an auxiliary jack allow for hands free use of the iPhone while driving as a substitute for Bluetooth.


While the iPhone is compatible with normal headphones, Apple provides a headset with additional functionality.

 A multi purpose button near the microphone can be used to play or pause music, skip tracks, and answer or end phone calls without touching the iPhone.


 A small # of third-party headsets specifically designed for the iPhone also include the microphone and control button.

 The current headsets also provide volume controls, which are only compatible with more recent models.

 These features are achieved by a fourth ring in the audio jack that carries this extra information.


The built-in Bluetooth two.x+EDR supports wireless earpieces and headphones, which requires the HSP profile.

 Stereo audio was added in the 3.0 update for hardware that supports A2DP.

 While non-sanctioned third-party solutions exist, the iPhone does not officially support the OBEX file transfer protocol.


The lack of these profiles prevents iPhone users from exchanging multimedia files, such as pictures, music and videos, with other blue tooth-enabled cell phones.



Composite or component video at up to five hundred and six i and stereo audio can be output from the dock connector using an adapter sold by Apple.


 iPhone 4 also supports 1024 × 768 VGA output without audio, and HDMI output, with stereo audio, via dock adapters. The iPhone did not support voice recording until the 3.0 software update.