what is prl on iphone
View PRL/ERI ID - AppleÂ® iPhoneÂ® 7 / 7 Plus. Having the most recent PRL (Preferred Roaming List) ensures you have the best network coverage. The Enhanced Roaming Indicator (ERI) displays your network status based on the PRL. From the Home screen, navigate: Settings > General > About. Tap Carrier once to view the PRL or twice to view the ERI.