Is it illegal to look at my spouse's phone text messages and sender phone number in state of Georgia? Phone has no password .

Yes. 16-9-93(c) Computer Invasion of Privacy. "Any person who uses a computer or computer network with the intention of examining any employment, medical, salary, credit, or any other financial or personal data relating to any other person with knowledge that such examination is without authority shall be guilty of the crime of computer invasion of privacy." 16-11-62 It shall be unlawful for: (1) Any person in a clandestine manner intentionally to overhear, transmit, or record or attempt to overhear, transmit, or record the private conversation of another which shall originate in any private place; The lack of a password does not amount to giving you consent to read her texts. Besides, you can file for divorce and subpoena her phone records anyway.