In many Android smartphones, simultaneous charging and OTG (On-The-Go) functionality are often not supported. When you connect a USB OTG cable to your smartphone, it typically draws power from the device to operate the connected USB accessory. This may hinder the charging process.
However, it's worth noting that specific device models and manufacturers may vary, so it's a good idea to check your device's documentation or settings to see if it explicitly supports simultaneous charging and OTG functionality. Some users have reported success with certain adapters or specific smartphone models that allow for both charging and OTG use simultaneously.