Encryption can be done on device. Google as the major player could simply implement it without carriers' approval and without changing underlying protocols. Ins

Encryption can be done on device. Google as the major player could simply implement it without carriers' approval and without changing underlying protocols. Instead they have chosen to route unencrypted messages through their servers. > or they have to comply with local law enforcement regulations about texting. Carriers can record encrypted messages and provide them to police and courts.