From iOS Client-side we need to obtain the ECGI (E-UTRAN Cell Global Identifier) information of the connected network tower. Is there any iOS API that can provide information?

We are developing a PTT application where it is necessary to receive call at recipient end without user consent, I mean call will be auto received, But in callkit not getting any option where call can be received without user consent. So currently we are using Unrestricted VOIP entitlement and handling calls without callkit. so need information for below points: How long Apple will keep this VOIP restriction entitlement support? Is there any API introduced in CallKit where call receive is possible without user consent, i mean auto received? Thanks.