MAP MCE iPhone connectivity

iPhones do not fill in the tel: field in the originators vCard upon
receipt of a text message, this was causing parsing to fail as it was
assumed that every SMS message will have an associated phone number.
Updated logic to check fields more riggorously.

Bug: 32110763
Change-Id: Ie9135167ad957a2a8054ea414d3e9ec576d3271b
(cherry picked from commit 72bece8184e5c47754a5ad41e4ef584bb5ab70c4)