Document 6 in App Store
OpenVPN in App Store
Download .ovpn configuration here at phcorner site. The config depends on your sim as either for globe/tm or smart/tnt.
Download ovpn files from websites such as tcpvpn.com. You'll need to create an account first for the configuration. The ovpn file can be saved to Document 6 app. For further tutorials, refer to the search bar.
Open Document 6 and look for the ovpn file then import it to the OpenVPN app.
Smart/TNT config requires load/promo
Globe/Tm default APN - config requires load/promo
Globe/Tm MGC APN - works without load/promo for LTE.
Use search bar for further details. There are lot pf working configs here at the site.