These alerts can appear for a few reasons: Your iOS device might have a dirty or damaged charging port, your charging accessory is defective, damaged, or non Apple-certified, or your USB charger isnt designed to charge devices. Follow these steps: Remove any debris from the charging port on the bottom of your device.

How do I enable OTG in settings?

Check OTG Settings Usually, when you try to connect an OTG, you get an alert “Enable OTG”. This is when you need to turn the OTG option ON. To do this, navigate through Settings > Connected devices > OTG. Here, click on the On/Off toggle to activate it.