Globe has upgraded their Duo service with Super Duo — an add-on landline number attached to your mobile phone number which enables you to make unlimited landline calls as well as unlimited mobile phone calls to any Globe or Touch Mobile number nationwide.
For an additional Php499 per month on top of your regular subscriptions, Globe Super Duo gives you unlimited phone calls to any Globe/TM phone nationwide. Price for prepaid subs is Php599 per month or Php35 per day. No need to get a Duo-activated SIM — your existing SIM card will do.
To activate Super Duo, text “œSUPERDUO < area > ON” to 8888.