tree 0a5853134235f5784ecff0ed3c211a6201927721
parent 8c32954906f0ce7192f25b38154d9dbc18bc508b
author Holly Jiuyu Sun <jiuyu@google.com> 1520294857 -0800
committer Holly Jiuyu Sun <jiuyu@google.com> 1520294857 -0800

Remove toString() for CarrierIdentifier.

We may get NPE if mCarrierIdentifier is null. + should convert it to
string by itself.

Test: test on phone
Change-Id: Ibd352d6d2a9b0cb33a494d108eb0d3a7c1dbc61b