On my Samsung i5700 (Spica), Android 2.1, I have installed 3CXPhone from the Market Place and configured it, registration successfully, telephone calls via WLAN, provider dus.net, obviously possible (it rings). With every access to the configuration of 3CXPhone the mobile phone hangs itself, I must remove the accumulator. I have repeated the installation and restarted the mobile already five times with accumulator remove. Does it concern to an incompatibility or can I solve the problem by configuration? An expert suspects a bug. Thank you for your response.