 x_calc Universal free, every day use calculator with scientific features. One of top.
Good for simple and advanced calculations!   Total Calculator Calculate the whole expression in single step. Know how healthy you are with BMI calculator. It's Free   Graph2Go Graph2Go  Graphing calculators are instrumental in teaching and learning mathematics. It is an environment that supports conceptual understanding of functions in general, and school algebra and real analysis in particular. Especially, it enhances connections between graphic and symbolic representations   Graphing Calculator Graphing Calculator  FREE app, designed to turn your cell phone into a Graphing Calculator.
It should work on all phones that support J2ME, like Nokia, Blackberry, Motorola, LG, Samsung, Sony Ericsson and more (specifically MIDP 2.0 and CLDC 1.1)   Touch Screen Calculator Touch Calc 60, the scientific calculator is now available in a whole new avatar 

 Calculadora Cientifica Funciona muy bien, muy util   Calculator v.2 Calculator provides simple and advanced mathematical functions in a beautifully designed app.
• Perform basic calculations such as addition, subtraction, multiplication, and division
• Do scientific operations such as trigonometric, logarithmic, and exponential functions   RZCalculator This calculator for java mobile phones can calculate binary, octal, decimal, hex numbers and convert it to each other. It supports logical expressions, parenthesisses, memory and 64bit integer arrithmetics. Operator precedence as in C++, C#, C, Java   Calc4M Calc4M is a calculator for mobile phones   EasyCalcFree EasyCalcFree  A very simple calculator. Enter a list of up to 10 numbers, add labels.
Comes with hyperintelligence: You can write *, x, /, div, divide, subtract, plus, minus, times, takeaway, or pls, tms, add...you will still get the same result 
