Originally Posted by nadun_don
which android version you are having ?? if it is 4.4.2 u will not face this Unknown ID issue.
only the 4.4.3 update made issues for caller ID which doesn't recognize the country code of that related country service provider. when you remove the country code it will show the correct ID but then the Viber/Whatsapp/Line will not recognize the number without the Complete phone number.
you can by pass this by going the Gmail > Settings > Phone numbers: Default country code: "put a country you will never visit"
Thanks for the responses guys - I actauly fixed this yesterday, but thinking what it was I recently installed when this started... and uninstalling it! It was the Klick app (Cheap eBay version of the 'Pressy' Button!)
Uninstalled it and now it behaves fine.
BTW The Klick button is sort of OK, you can set it to launch an app, ie the camera, but intuitively then you expect it to also operate the camera, which it doesn't. Plus setting it to operate even when the screen is locked (as you would probably want, for instant-access) of course means I was always finding I'd knocked it.
So a good idea, but not really that functional. plus caused a glitch with my phone history!