TPG offers the SENIORS GO DIGITAL MOBILE PLAN for $5 for 20 GB per 30 days. It also includes 300 minutes, 30 SMS and free 1 GB data roaming. Seniors can port in their postpaid line from other telco or get a new random number.
Although the details are out on it’s website, registration is still not opened. The same applies for Starhub, M1 and Singtel.