Javascript user agent iphone

Navigator.userAgent

The Navigator.userAgent read-only property returns the user agent string for the current browser.

Note: The specification asks browsers to provide as little information via this field as possible. Never assume that the value of this property will stay the same in future versions of the same browser. Try not to use it at all, or only for current and past versions of a browser. New browsers may start using the same UA, or part of it, as an older browser: you really have no guarantee that the browser agent is indeed the one advertised by this property.

Also keep in mind that users of a browser can change the value of this field if they want (UA spoofing).

Browser identification based on detecting the user agent string is unreliable and is not recommended, as the user agent string is user configurable. For example:

• In Firefox, you can change the preference general.useragent.override in about:config . Some Firefox extensions do that; however, this only changes the HTTP header that gets sent, and doesn’t affect browser detection performed by JavaScript code.
• Opera 6+ allows users to set the browser identification string via a menu.
• Microsoft Internet Explorer uses the Windows registry.
• Safari and iCab allow users to change the browser user agent string to predefined Internet Explorer or Netscape strings via a menu.

Syntax

Value

A DOMString specifying the complete user agent string the browser provides both in HTTP headers and in response to this and other related methods on the Navigator object.

The user agent string is built on a formal structure which can be decomposed into several pieces of info. Each of these pieces of info comes from other navigator properties which are also settable by the user. Gecko-based browsers comply with the following general structure:

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iPhone user agent — Use JavaScript to detect the user agent

iPhone ‘user agent’ FAQ: I’m trying to optimize my HTML/web app for the iPhone; how do I detect an iPhone, iPod, or iPad browser in my web application?

This Apple page shows the iPhone, iPod, and iPad user agent strings, so you just need to write some JavaScript that properly parses those iPhone/iPad browser user agent strings.

Here’s what the iPhone user agent string looks like for iOS 2:

That’s actually one long string, but I wrapped it here to reduce scrolling.

As you can see, the string «iPhone» is contained in that user agent text, so a simple way of searching for the iPhone string in the user agent text with JavaScript looks like this:

That statement makes the variable isIphone true if the string «iPhone» is seen in the browser user agent text, or false if the text is not found.

Detecting iPhone, iPod, or iPad user agents

You can use just that one line if you’re really only concerned about detecting the iPhone in your HTML application, or you can also perform other checks for the iPod and iPad to detect all iOS devices:

Now that you’ve properly detected the iPhone, iPod, or iPad devices in your web application using JavaScript, you can use the isIos variable (or the other JavaScript variables we created) in your JavaScript decision-making process.

iPhone/iPad user agent detecting — More information

For more information on detecting iPhone and iPad user agents, see this Apple documentation page. For a JavaScript library which was made for detecting Apple WebKit devices, see this link on detecting WebKit.

iPhone/iPad web app user agent detecting — Summary

I hope this tip on using JavaScript to detect iPod, iPhone, and iPad devices in your HTML/web apps has been helpful. When you’re trying to optimize your web app to look as much as possible like a native iPhone app, you just need little tips like this to optimize the HTML (and JavaScript) in your web app.

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Detecting browsers of iPhone, iPod, iPad, Android and BlackBerry with JavaScript and PHP

To begin with, we need to understand that in the HTTP protocol, browser send its identity called user agent to the server to request the wanted webpage. Every browser has its only unique user agent value, and therefore we can check that value to identify the user browser. So, first we have to take a look at some examples of user agents of mobile devices.

iPhone user agent

[sourcecode]
Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1A543a Safari/419.3
[/sourcecode]

iPod Touch user agent

[sourcecode]
Mozilla/5.0 (iPod; U; CPU like Mac OS X; en) AppleWebKit/420.1 (KHTML, like Gecko) Version/3.0 Mobile/3A101a Safari/419.3
[/sourcecode]

iPad user agent

[sourcecode]
Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.10
[/sourcecode]

Android user agent

[sourcecode]
Mozilla/5.0 (Linux; U; Android 1.1; en-gb; dream) AppleWebKit/525.10+ (KHTML, like Gecko) Version/3.0.4 Mobile Safari/523.12.2
Mozilla/5.0 (Linux; U; Android 2.1; en-us; Nexus One Build/ERD62) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17
[/sourcecode]

BlackBerry user agent

[sourcecode]
BlackBerry9000/4.6.0.266 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/120
[/sourcecode]

After all, in programming, we gather these data to do the checking. First in JavaScript:

[sourcecode language=”javascript”]
if (/(iPhone|iPod|iPad)/.test(navigator.userAgent)) <
/* This is iOS */
>
if (/Android/.test(navigator.userAgent)) <
/* This is Android */
>
if (/BlackBerry)/.test(navigator.userAgent)) <
/* This is BlackBerry */
>
if (/(iPhone|iPod|iPad|BlackBerry|Android)/.test(navigator.userAgent)) <
/* This is one of the mentioned mobile device browsers */
>
[/sourcecode]

And this is how it works in PHP:

[sourcecode language=”php”]
if (preg_match(‘/iPhone|iPod|iPad/’, $_SERVER[‘HTTP_USER_AGENT’])) <
/* This is iOS */
>
if (preg_match(‘/Android/’, $_SERVER[‘HTTP_USER_AGENT’])) <
/* This is Android */
>
if (preg_match(‘/BlackBerry/’, $_SERVER[‘HTTP_USER_AGENT’])) <
/* This is BlackBerry */
>
if (preg_match(‘/iPhone|iPod|iPad|BlackBerry|Android/’, $_SERVER[‘HTTP_USER_AGENT’])) <
/* This is one of the mentioned mobile device browsers */
>
[/sourcecode]

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How Can I Detect the iPhone & iPad’s User Agent?

So you’ve decided to create a mobile website for iPhone and iPad users, rather than creating a web applications. Where do you start? This tutorial will show you how to detect the popular mobile devices using JavaScript, PHP and your site’s .htaccess file!

Detecting the iPhone and iPad

Obviously, if you’ve created a page specifically for iPhone and iPad users, the first thing you’ll need to do is to find out when a user is visiting your site via an iPhone or iPad. Apple provides the iPad’s user agent string, which appears as follows:

The iPhone’s user agent string appears as follows:

Provided with this information, it’s fairly straight forward to use JavaScript to detect the user agent, and send the user to a specific page:

Using the same information, you can do the dirty work on the server side using PHP instead:

Finally, you could always use your site’s .htaccess file to do the same thing on the server side of things:

Now, assuming you want to purchase a ready-made package that detects all mobile devices, you can visit the Detect Mobile Browsers website for their $50 PHP-based mobile device detection script. It is free for non-profit or personal use, however commercial websites need to purchase it. Not only will it detect iPhones and iPads, it will also detect Android, Opera Mini, Blackberry, Palm and Windows devices. You can even use their function generator to create the specific action you wish to, once the user agent is detected. Actions include treating the user agent as a mobile device, directing the user to a specific page for the device, or displaying the page normally as it would for any other browser.

Next week we’ll get into the creation of iPhone and iPad specific websites, show you how to detect and set the iPhone and iPad’s viewport orientation using JavaScript and more!

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How to Use userAgent to detect mobile device

Can anyone help me with this.

I would like to detect device such as Iphone, BB, andriod and browser to apply their specific css to make it liquefied or adjust to their resolution.

Does andriod and Iphone have difference resolution issue or css problem when it comes to mobile browser because i plan to use same css for those 2 because i know they are using the same browser safari as default.

7 Answers 7

Here is an example in javascript:

To check for a specific User-Agent string you can do:

Try to use http://www.php.net/get_browser and check for isMobileDevice field. It might help only, of course, if the path to browscap.ini is set up in php.ini. If not, you can use php classes like https://github.com/garetjax/phpbrowscap

Here is the code for the mobile device detection.

Hope this will help you.

It works almost every time.

-1 if not mobile; any other value if mobile

There are lists of almost all user agent strings for you. .

You can use CSS Media Queries to identify the different devices (actually the different device features like device-width, dpi, etc)

For the CSS, you can have different options like having separate CSS for each type of device OR having a fluid design which would mean having the same CSS scale for different device sizes. The 2nd approach is slightly complex to design, but is much more flexible from new devices that may come up in future..

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