from typing import List


def split_phone_position(phone_label: str) -> List[str]:
    """
    Splits a phone label into its original phone and it's positional label

    Parameters
    ----------
    phone_label: str
        Phone label

    Returns
    -------
    List[str]
        Phone and position
    """
    return phone_label.rsplit("_", maxsplit=1)