in the settings->general settings->mapping->cell extra info. In Map, you can change the setting more info when map display. You can change the it to none, cell name, or radio ID and cell ID options.

Please note for Radio ID, for GSM it will be ARFCN and BSIC, LTE is EARFCN and PCI, WCDMA is UARFCN and PSC, TD-SCDMA will be UARFCN and CPI, CDMA is Channel and PN…