Apple has recently pushed iOS 18 to supported iPhones just this week. Along with new notable features such as customizable Control Center, new Passwords app and many more, one highly anticipated feature is RCS messaging.

Fitur obrolan yang lebih luas seperti berbagi media beresolusi tinggi, tanda terima baca, dan obrolan grup kini memungkinkan antara pengguna iMessage dan Android melalui Rich Communications Services (RCS).
Namun, tampaknya RCS di iPhone belum tersedia di Filipina.
Toggle "pesan RCS", yang seharusnya berada di Pengaturan > Aplikasi > Pesan > Pesan RCS, tidak ada pada perangkat iPhone rekan tim kami yang menjalankan iOS 18.

Several Reddit users also reported its absence on their devices, likely using the stable iOS 18 release.
It is uncertain whether Apple or the telco providers (Smart, Globe) is at fault here. Though RCS is already available in major markets like the US, it's likely that Apple has yet to fully enable RCS for the Philippines.

Saat mencari "RCS" di Pengaturan, hasil memang muncul di lokasi yang sama. Perangkat yang digunakan dalam tangkapan layar di atas adalah iPhone 12 Pro Max yang menjalankan stable iOS 18 dan berlangganan Smart Postpaid.
This supports the speculation of Apple not yet fully enabling RCS in the country. After all, the RCS messaging feature is located under the Messages app settings rather than Network settings.

Obrolan RCS di Android telah tersedia selama bertahun‑tahun sekarang melalui Google Messages. Mungkin, inilah alasan mengapa semua produsen kini menggunakannya daripada aplikasi pesan mereka sendiri (seperti Samsung Messages).
Untuk saat ini, pengguna di Filipina mungkin harus menunggu sebelum pesan RCS antara iPhone dan Android menjadi kenyataan.
MMS (Multimedia Messaging System) was already removed way back in 2018 in most Telco companies here in the Philippines thus RCS is still not available until they enable it again.