SG Payment Deep Link Test

Android: try the Android rows first — these use the documented intent:// form with the app's package id, which is the most reliable and falls back to Play Store if the app isn't installed. The bare scheme:// rows may be silently dropped by Chrome.
iOS: try the iOS · Android rows. iOS gives no error when a scheme has no handler — silence = no app claims that scheme.
Sanity: if even tel: at the bottom doesn't open the dialer, the page mechanism itself is the problem, not the bank app.