If you are looking to unlock your Sony Ericsson Vivaz (U5i) or Vivaz Pro (U8i), you may have encountered the . This software is often cited in older technical forums as a reliable, direct solution for removing network locks or user-defined phone codes from these specific Symbian-based Sony Ericsson devices.
Select the option for Unlock Network or Reset Phone Code . Dbx Phone Lock Tool Download Vivaz