Just like Globe Duo, unlimited call Globe selected landlines and DUO landlines nationwide. Super DUO comes with unlimited additional Globe/TM unlimited calls for onlyP599 valid for 30 days.
Here's how to:
Just text SUPERDUO <area> 599 to 8888 the wait for the confirmation code to enjoy the service.
Just text MYSUPERDUO <area> ON to 8888 the wait for the confirmation code to enjoy the service.
Once subscribed to the service you will now have 2 phone numbers
Your current mobile number (ex. 0915-XXX-XXXX)
Your DUO landline number (ex. 02-XXX-XXXX).
To call from you SUPERDUO phone to any landline (dial area code + landline number)
To call to from any landline to your DUO phone (dial area code + DUO number of person you are calling)
To call to from your SUPERDUO phone to another SUPERDUO/DUO phone (dial area code + DUO number of person you are calling)
You may read this How to Register to Globe DUO for your reference aside from SUPERDUO promo. Also read other promos offers from Globe Globe Unlimited Call Text and Combo Promo List or if you want list for unlimiter text promo read Globe Unlitxt 20, 40, 80 Unlimited Text Promo.