Some versions of the Nokia 7110 browser has a problem with POSTing more than around 160 characters. In reality, there seems to be a content length limit of around 170-180 characters. In other words, the variable names and their contents all put together. if you only post one variable called "A", then this variable can hold around 160 characters. If you have several variables, with names like "thisisthenameofaverylongvariable", then the contents of these variables have to be smaller.

There is however a solution to this problem, but it requires the phone to be reconfigured. Under the Connection Settings menu, you will find a menu item called Connetion type. If you set this to Continous the phone will be able to post larger variable contents.