Hi how to redirect the user into mobile site when the user accessing from mobile. Say example i have site called www.mysite.com. Now, a person accessing a website from mobile it should redirect to www.mysite.com/mobile or www.m.mysite.com.

I put some research in google that we can redirect using javascript to get the user agent(browser)

if(mobile browser) {
  //redirect to www.mysite.com/mobile
} else if(normal browser) {
  //redirect to www.mysite.com

or using screen resolution

if(screen resolution < 800 ) {
  //redirect to www.mysite.com/mobile
} else if(screen resolution > 800) {
  //redirect to www.mysite.com

I think It will not work If it is the case of javascript disable.

Can we do this using .htaccess or php stuff?

Is there any standard mechanism to do this?

1 Answer 1


use media queries for css

in you css put

@media all and (max-device-width: 1024px) {
... css here

the max-device-width should be the width of the mobile device you want to detect.

on the other hand u can use useragent

in javascript

var isMobile = navigator.userAgent.match(/(iPhone|iPod|iPad|Android|BlackBerry)/);

if(isMobile) {
   // User-Agent is IPhone, IPod, IPad, Android or BlackBerry

to check the specific user-agent string

if(navigator.userAgent.match(/iPhone/)) {
   // The User-Agent is iPhone

in php this is hwo you do this


check first the useragent of the device

the give the condition

print "Firefox user.";
// process here for firefox browser

in the pregmatch.. you can put into condition 'iPhone','Andriod' etc

  • javascript is not a trusted one, it will not work if it is the case of javascript disabled in mobile browser agent.
    – iLaYa ツ
    Commented Feb 21, 2012 at 6:06
  • edited my post so that u can use PHP
    – Bert
    Commented Feb 21, 2012 at 6:19
  • Note that on Opera (Android), the UA string does not contain the "Android" sub-string.
    – Alix Axel
    Commented Feb 23, 2012 at 11:17

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