You might try something like this in addition to the code above; it’s a bit of an improvement on the iPhone, but doesn’t display all the header options:
.fc-header td {
white-space:normal !important;
}
.fc-header-title h2 {
white-space:normal !important;
font-size:28px !important;
}
.fc-button-today {
display:none !important;
}
#aec-quickselect {
display:none !important;
}
.fc-header-left {
width:28% !important;
}
.fc-header-right {
width:40% !important;
}