₦airaland Forum

You can use OTG Troubleshooter app which is very simple. Users can disconnect and connect the OTG cable when prompted and if everything is fine, you will receive four green check marks, if not you do not get four green checks, tap on More Info for a description on the issue.

Kindly search "OTG Troubleshooter app " in Google. I am not sharing link of OTG Troubleshooter app because Forum Policy is not allowed to share link.

No idea about funtouch 2.5 os. I have used OTG Troubleshooter app which is perfectly fine for me.