As a DITO SIM user, I learned how important DITO SIM registration is when my mobile data suddenly stopped because I didn’t register on time. In the Philippines, the SIM Registration Act requires all users to register their SIM cards. This rule is managed by the NTC and DICT. No matter if you use DITO, Globe, or Smart, you must complete your registration. If you don’t, your SIM may stop working and you can lose access to calls, texts, and internet.