Unable to change from speaker to bluetooth device instead it is routing audio to phone earpiece

As I am using setAudioRoute to set back to bluetooth and I am not able to switch

await InCallManager.setAudioRoute(‘’,'BLUETOOTH').then((response) => {
})

iOS Native function

RCT_EXPORT_METHOD(setAudioRoute: (NSString *)uuid
                 inputName:(NSString *)inputName
                 resolver:(RCTPromiseResolveBlock)resolve
                 rejecter:(RCTPromiseRejectBlock)reject)
{
#ifdef DEBUG
   NSLog(@"[RNCallKeep][setAudioRoutesetAudioRoute] - inputName: %@", inputName);
#endif
   @try {
       NSError* err = nil;
       AVAudioSession* myAudioSession = [AVAudioSession sharedInstance];
       if ([inputName isEqualToString:@"Speaker"]) {
           BOOL isOverrided = [myAudioSession overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:&err];
           if(!isOverrided){
               [NSException raise:@"overrideOutputAudioPort failed" format:@"error: %@", err];
           }
           resolve(@"Speaker");
           return;
       }


       NSArray *ports = [RNInCallManager getAudioInputs];
       for (AVAudioSessionPortDescription *port in ports) {
           if ([port.portName isEqualToString:inputName]) {
               BOOL isSetted = [myAudioSession setPreferredInput:(AVAudioSessionPortDescription *)port error:&err];
               if(!isSetted){
                   [NSException raise:@"setPreferredInput failed" format:@"error: %@", err];
               }
               resolve(inputName);
               return;
           }
       }
   }
   @catch ( NSException *e ){
       NSLog(@"[RNCallKeep][setAudioRoute] exception: %@",e);
       reject(@"Failure to set audio route", e, nil);
   }
}

What I tried:

• Setting the setAudioRoute directly
• Setting the route to bluetooth directly from avaudiosessionListener

Start with the iOS native setAudioRoute implementation shown in the issue and trace how getAudioInputs and AVAudioSession handle the Bluetooth route. Reproduce switching from speaker to Bluetooth, then verify that the selected Bluetooth input is retained instead of routing audio to the phone earpiece.