The Black Phone is a good choice for confident learners looking for more realistic and demanding listening practice. Lines are generally delivered at a comfortable pace for regular listening practice. The language mixes everyday English with a few expressions that need attention, so it works best for learners who already have a solid base. The complexity of the plot makes listening more challenging because learners also need to keep track of what is happening. If your English is close to B2/C1, The Black Phone can be useful for building confidence with more complex narratives.