Get a esp32 module with a usb port and a usb otg cable, connect them to your phone and you're all set.

https://www.amazon.com/HiLetgo-ESP32-S2FN4R2-ESP32-S2-Type-C-Connect/dp/B0B291LZ99/ref=sr_1_12_sspa

https://www.amazon.com/dp/B01M5GZ3N0

If your interested in this chip, this board may work:

https://www.amazon.com/HiLetgo-ESP32-S2FN4R2-ESP32-S2-Type-C-Connect/dp/B0B291LZ99