如何挡机器人打电话

Wireless/Mobile

• AT&T: ActiveArmor mobile security app that helps stop spam and scams.
• Google Project Fi: Call blocking options for Project Fi wireless service.
• T-Mobile: ScamShield app to block scam calls and robocalls.
• U.S. Cellular: CallGuardian to stop spam, unwanted, and illegal calls with advanced filtering and blocking protection.
• Verizon: Call Filter FAQS for screening and blocking unwanted calls.