 FastCalc by Panayotis FastCalc by Panayotis  FastCalc is a calculator optimized to minimize the distance the fingers have to move, in order to perform the basic calculator tasks.
For this reason only the 12 basic buttons of the mobile phone are used   Calc4M Calc4M is a calculator for mobile phones   Simple Scientific Calculator Basic arithmetic operation, trigonometric function, solve linear and quadratic 2 and 3 variable   Graph (Java) Graph calculates mathematical expressions and draws function graphs on the screen of J2ME mobile devices   Solve2Go Solve2Go  supports solving equations and inequalities by means of conjectures based on visual thinking. Conjectures can be refuted or supported by examples provided by the tool, and should be proved using symbolic manipulations on paper.
Equations: when we want to know for which values of x the two functions are equal 

 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   RaiCalculator Calculator For Nokia S40   MobileMath MobileMath  MobileMath turns your mobile into a calculator supporting many operations such as: evaluate expression, plotting, differentiate & integrate expression...
Supports basic functions of a calculator:
· Operators : +, , *, /, ^
· Functions : sin, cos, tan, exp, ln...
· Solve equations
· And much more..   TouchMaths_ME The program TouchMaths (for touchscreen mobile phones) contain a set of revolutionary mathematical applications (Professional Calculator, Graph 2D, Function solver, Integral solver, Equation solver and Linear system solver)   Calculator V1.02 Calculator V1.02  This is the calculator which has many functionalities than the normal calculator provided in the mobiles, this software is mainly designed for the touch screen mobiles. This will not work on the mobiles which do not have touch screen facility 
