heat it for Android is compatible with Android smartphones with a USB-C port. The "OTG" function has to be enabled manually on isolated smartphones from e.g. OnePlus, OPPO or VIVO (explanatory video). Older smartphones with a Micro-USB port must support the OTG standard and require an adapter. Unfortunately, these micro-USB smartphones are not compatible: - Huawei P9 lite - Samsung Galaxy A5 - Samsung Galaxy A6 - Samsung Galaxy A7 - Samsung Galaxy A10 - Samsung Galaxy J5 - Samsung Galaxy J530 - Samsung Galaxy S5 neo - Samsung Galaxy S5 mini - Cubot Note S Note: The current heat it for Android is not compatible with the iPhone 15. We are working on a solution and ask for a little patience.