#Detect and redirect Phone Browser
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} iPhone
RewriteCond %{HTTP_USER_AGENT} Windows CE
RewriteCond %{HTTP_USER_AGENT} BlackBerry
RewriteCond %{HTTP_USER_AGENT} NetFront
RewriteCond %{HTTP_USER_AGENT} Opera Mini
RewriteCond %{HTTP_USER_AGENT} Palm OS
RewriteCond %{HTTP_USER_AGENT} Blazer
RewriteCond %{HTTP_USER_AGENT} Elaine
RewriteCond %{HTTP_USER_AGENT} ^WAP.*$
RewriteCond %{HTTP_USER_AGENT} Plucker
RewriteCond %{HTTP_USER_AGENT} AvantGo
RewriteCond %{HTTP_USER_AGENT} Nokia
RewriteRule .* http://mob.yourdomain.com/ [R]
#End of Code

RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} ^iPhone.* [OR]
RewriteCond %{HTTP_USER_AGENT} ^Windows CE.* [OR]
# etc
RewriteRule ^/$ /mobile/ [L]