MKR WIFI 1010 does not work as a BLE peripheral

I'm trying to run Arduino MKR WiFi 1010 as a BLE peripheral, but I can't find it from other central devices. (e.g. iPhone)
The code is ArduinoBLE>Peripheral>BatteryMonitor example, and the serial monitor says "Bluetooth® device active, waiting for connections..." so I don't think there is a problem.
Can you give me some advice?

Firmware version: 1.4.8
Arduino IDE 1.8.19

remove line code
while (!Serial);

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