If you’re using a landline, simply pick the phone up and prepare to dial.
*67 - United States (except AT&T), Canada (landline), New Zealand (Vodafone phones) #31# - United States (AT&T phones), Australia (mobile)[2] X Research source , Albania, Argentina (mobile), Bulgaria (mobile), Denmark, Canada (mobile), France, Germany (some mobile providers), Greece (mobile), India (only after network unlock), Israel (mobile), Italy (mobile), Netherlands (KPN phones), South Africa (mobile), Spain (mobile), Sweden, Switzerland (mobile) *31# - Argentina (landline), Germany, Switzerland (landline) 1831 - Australia (landline)[3] X Research source 3651 - France (landline) 31 - Greece (landline), Iceland, Netherlands (most carriers), Romania, South Africa (Telkom phones) 133 - Hong Kong *43 - Israel (landline) *67# - Italy (landline) 184 - Japan 0197 - New Zealand (Telecom or Spark phones) 1167 - Rotary phones in North America *9# - Nepal (NTC prepaid/postpaid phones only) *32# - Pakistan (PTCL phones) *23 or *23# - South Korea 067 - Spain (landline) 141 - United Kingdom, Republic of Ireland If your phone is on a GSM network (e....