Im is the abbreviation of I am, which means "I am..., I..."
If used as a prefix, im is the complete form, which means "not..." ., not..." For example: impossible, impossible imperfect extended information
Example sentence:
If you need anything, I am at your service.
< p> If you need anything, please just ask.As far as I am concerned, you can do what you like.
As far as I am concerned, you can do what you like.