Your in-game conversations are not private — EA can record and review them, and may take action against your account based on what you say.
EA collects a wide range of personal data including gameplay behaviour, device identifiers, voice and text communications, billing information, and advertising interactions, which it shares with advertising partners for interest-based targeting both within EA services and on third-party websites. Your in-game communications may be monitored, recorded, and reviewed, and device fingerprinting is used for anti-cheat and fraud prevention purposes. You can opt out of targeted advertising and, if you are a California resident, opt out of the sale or sharing of your personal information by visiting EA's privacy settings at privacy.ea.com.