You asked:

what did alexander graham bell invent

  • Alexander Graham Bell is an inventor of AT&T, telephone, metal detector, telephone call, phone number, corded telephone and modern telephone.
  • AT&T
    AT&T
  • telephone
    telephone
    telephone

  • metal detector
    metal detector
    metal detector

  • telephone call
    telephone call
    telephone call

  • phone number

  • corded telephone

  • modern telephone