I understand. But these apps are too useful.
Now i tested the other choices like Cinema, Films, Youtube, etc. and all tabs are blank except the Apps tab.
I'm not sure if the problem is in the apps or something else.

Today, i upgrade my 'Bq Aquaris E4.5' to 16.04. Everything seems that are ok except these issue.
The two Tabs Calls and Messages are empty and doesn't show the history. I have already installed the following apps manually, but is seems there are not support Xential yet.
https://open-store.io/app/com.rubencarneiro.scopes.calls
https://open-store.io/app/com.rubencarneiro.scopes.texts

If i open the Messaging app, the messages history are there.
Same happens with the calls. If i open the Phone app the calls history are there.

Any idea how to fix that?

I'm trying to backup my device (BQ Aquaris E4.5) before install ubports with magic-device-tool but i have many errors.

rsync: symlink ...... failed: Operation not permitted (1)

and in the end

676,388,345  53%    1.21MB/s    0:08:54 (xfr#14152, to-chk=0/29721)rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1183) [sender=3.1.1]

Backup NOT OK!

Is it safe to continue install ubports ?