Software for mobile devices is becoming increasingly popular. The limited resources and limited user interface brings new issues in software development process for mobile devices. These limitations should be considered especially in design and testing phases of software development process. The software for mobile devices can not be thoroughly tested, because unit tests can not be stored in mobile device due to the lack of storage on it. Testing results can not be easily observed on small screens of mobile devices. This work depictures the influence of mobile technologies to software development process. The influence is exemplified with a project “Mobile Professor”. This work concentrates on problems encountered in software testing process for mobile devices especially in unit testing. The work presents other authors suggested solutions for earlier mentioned problems, and also suggest the new approach for performing unit testing for mobile devices, which does not suffer for these limitations of mobile devices. Existing and suggested methods are compared and evaluated experimentally.