Buying a local SIM at Manila's NAIA airport now requires registration under the Philippines SIM Registration Act, which has been mandatory since 2022 and applies to tourist SIMs from Globe, Smart, and DITO. The registration process at airport kiosks adds 15 to 30 minutes after a long flight, requiring passport and identity verification. The ETravelSim Philippines eSIM bypasses this entirely — it installs at home before you fly, requires no registration on arrival, and connects the moment your plane lands at NAIA, Mactan-Cebu, or any other Philippine airport.