hardware capabilities sensors limitations considerations iphone details

HARDWARECAPABILITIES

SENSORSLIMITATIONS

CONSIDERATIONS

iPhone Details

Hardware Limitations

Memory

Screen Size

One application at a time

Application performance

Tech Specs – iPhone 3GS

Height: 4.5 inches (115.5 mm)

Width: 2.4 inches (62.1 mm)

Depth: 0.48 inch (12.3 mm)

Weight: 4.8 ounces (135 grams)

Location Awareness

Assisted GPS

Digital compass – on the new ones

Wi-Fi

Cellular – it can even make calls!

Power and battery

Built-in rechargeable lithium-ion battery

Charging via USB to computer system or power adapter

But no built-in wireless charging like the Palm Pre Wireless charging is cool

Storage and Display

16GB and 32GB capacity

Display

3.5-inch (diagonal) widescreen Multi-Touch display

480-by-320-pixel resolution at 163 ppiFingerprint-resistant coatingSupport for display of multiple languages and

characters simultaneously

Camera

Camera located on back of iPhone. Put one on the front eventually?

3 megapixelsAutofocusTap to focus – tap on a part of the imageVideo recording, VGA up to 30 fps with audioPhoto and video geotagging

Interesting image search possibilities Microsoft Photosynth

iPhone and third-party application integration

Sensors

Proximity sensor

Deactivates the display and touchscreen when the device is brought near the face during a call.

This is to save battery power and to prevent inadvertent inputs from the user's face and ears.

Now if we can get a ‘don’t call the most recently dialed number when the phone is in my pants pocket’ sensor.

Sensors

Ambient light sensor adjusts the display brightness which saves battery

power

Sensors - Accelerometer

A 3-axis accelerometer senses the orientation of the phone and changes the screen accordingly allowing the user to switch between portrait and landscape mode.

The 3.0 update will add landscape support for other applications, such as email, and introduce shaking the unit as a form of input.

Accelerometer can also be used to control apps, notably games.

Speed is critical

Motivated by User Interface considerations

Performance is critical on mobile devices Competitive nature Once you get a reputation as ‘slow’, you are doomed Remember Sun Solaris User experience

For our Applications

Shutdown quickly

5 seconds from user closing to write all data to non-volatile storage

Otherwise iPhone shuts the app down regardless

Fast performance – incoming calls

It’s always changing…

iPhone OS 3.0 adds new features, and the new hardware (3GS) has new capabilities

iPhone OS 3.0

In App Purchase – More $$! Sell extra content and services from your application using the Store

Kit framework. This new framework helps you keep track of your product catalogs, processes the payment transaction with the iTunes Store and returns information about each purchase.

Apple Push Notification service Alert your users of new information, even when your application isn't

running. Send text notifications, trigger audible alerts, or add a numbered badge to your application icon.

Accessories Applications can now communicate with your accessories either

through the 30-pin dock connector or wirelessly using Bluetooth. Build an app that retrieves data from external sensors or even control accessories with a sophisticated, Multi-Touch interface.

iPhone OS 3.0

Peer to Peer Connectivity Add multi-player capabilities to your games using the peer to peer network

connectivity and in game voice communication features of Game Kit. This powerful new framework allows any application, not just games, to communicate between devices using Bluetooth-no pairing required.

Maps You can now embed maps within your applications using the new Map Kit

framework. Map Kit works with the Google Mobile Maps Service and features panning and zooming, custom annotations, current location and geocoding.

iPod Library Access Access music, podcasts, or audio books in a user's iPod library directly

from your application using the updated Media Player framework. You can play, repeat and shuffle songs or whole playlists, or create sequences of songs using custom searches

iPhone 3GS

Open GL ES 2.0 Games and other graphics-intensive applications can now take

advantage of OpenGL ES 2.0, the latest version of the standard for hardware-accelerated graphics designed for mobile devices. OpenGL ES 2.0 adds programmable shaders that give you more control over the look of your scenes, allowing you to create more complex renderings and spectacular visual effects.

Accessibility Make your applications accessible to everyone—even those with

impaired vision. New to iPhone OS 3.0, VoiceOver helps users navigate through your application by translating standard gestures and providing spoken descriptions you include. Using the updated developer tools, you can easily adapt your iPhone applications to work with VoiceOver.

iPhone 3GS

Video Recording Embed a video recorder into your application using the new

interface used in the Camera application. The new interface provides a switch to toggle between still photos and video mode, giving your users the flexibility to capture the moment the way they want. Once the video has been captured, users can choose the videos they want from the updated Media Picker.

Compass Add heading information to your location-aware application. Core

Location has been updated to allow your applications to track which direction the user is facing using iPhone 3GS's built-in digital compass. While incredibly useful for any navigation-based application, when combined with the accelerometer the compass can also be used to capture iPhone's true orientation.