Some telephones have limits on the amount of the transferred tasks, therefore not all tasks can be transferred during synchronization.

Some telephones can reloaded during synchronization. It is a problem of old versions of weavings of Ericsson telephones. For correct work with service it is recommended to update the Your telephone software.

If you deleted information in a telephone by selecting menu "Delete all", during synchronization information about deleted data is not transferred, and the GSMSync server shows the presence of all deleted information. However if you deleted data one by one, information during synchronization is transferred correctly.

The Ericsson phones can fail during synchronization, if melodies or pictures are bound to contacts. For correct work it is necessary to delete all bindings of contacts.