It must be either the device you're using or a bug in it's code. If it's a bug then there's no need to worry sinced Instagram is updated constantly. If it does get bug fixes but still doesn't work then it's probably your device.
It must be either the device you're using or a bug in it's code. If it's a bug then there's no need to worry sinced Instagram is updated constantly. If it does get bug fixes but still doesn't work then it's probably your device.