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So I've just imported a load of contacts from Gmail and Facebook.
Thing is, many are out of date or incomplete so I need to delete them.
But when I try to delete from contacts I'm told 'cannot delete the following contacts'.
My contacts are in a bit of a mess at the moment, so any help would be greatly appreciated.
Solved! Go to Solution.
let me know if you need any more help
this might be handy
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
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you can sync them all to Google then on your computer go to your gmail > contacts > edit them and voila
or
open the messaging app > menu > filter > uncheck fb and google > done
Don't forget to mark the Correct Answers & Helpful Answers
Thanks, I'll give that a go
let me know if you need any more help
this might be handy
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
Don't forget to mark the Correct Answers & Helpful Answers
If you have back up of your original contacts i.e. numbers in .vcf file, download 'delete all contacts' from Play store. Delete all contacts. Goto accounts and remove sync option and now restore the contacts from .vcf file.. 
Thanks folks, sorted now. Much appreciated!
Most welcome.. 
anytime
Was baffling me so glad it's sorted now 🙂
Open Contacts, click on top righ corner of screen (The triple dot settings icon next to the magnifying glass - you know? the one nobody notices?)
then you will see the following;
Add Account
Import Contacts
Export Contacts
Mark Several
Filter
Find Link Candidates
Settings
Export the contacts for safety
The you can either mark several, and delete the ones you are not interested in,
Or remove them all;
Then at best, go to the Accounts/google/then click on your google account (some people use more than one account so choose which one)/ then you can deactivate the following;
Sync App Datea
Sync Calendar
Sync Contacts
Sync Google Fit Data
Sync People details
Remove 'Sync Contacts" from the list by unchecking the checkbox
If i were you i would say at best just remove the account, and dont use a google account at all so you cant be spyed on and add numbers from the exported .vcn file, or manualy and avoid Xperia downloading your 50,0000 contacts from gmail which is indeed a PAIN in the BUTT
But you can delete your contacts