If you are struggling to connect to the internet using your cellphone and are receiving errors like 691 and 734, then try this

The following steps are for windows 7 but can be followed in the other windows vista and windows xp operating systems as well.

Click start, right click Computer, click manage

Click device manager, click the + sign on the left of modems, then doubleclick your phone modem. eg. samsung usb

click advanced, then add the following in extra initialisation commands

at+cgdcont=1,”IP”,”internet”

then try your connection again.  If you still need to create a dialup connection, then use the phone number *99#