Saol, it's not the same at Sony.
In "Settings" gives me the following options: Accounts and synchronization. Service dialing numbers and Speed dialing. None of the options leaves me All contacts
Tecnopad, how did you solve it?
Today I have been with one of those guys who know everything about mobile phones and he told me that those who did not appear in Contacts, I would register them as new. I have done that and nothing, they still do not appear. Did I shoot myself or throw the phone?
Solved. I have contacted Sony and they have solved them for me. For someone who has the same problem the solution is the following:
In this case we recommend that you check the following options. Go to: CONTACTS> Click the options icon> FILTER. That the "CONTACTS ON LINE / CONTACTS CONNECTED" box is not activated. And in the section "SHOW CONTACTS", activate the boxes of the different accounts where these contacts can be, in order to visualize them in the calendar application.