How to increase the memory in an iPhone for free?

I already use the free space drop box give you and also the free space on icloud is there any others

You can always use free clouds, like google cloud or skydrive from hotmail.

Unfortunally no, not for free anyways, if you need additional space you would just have to pay for more space or delete some unused data on you IPhone, one thing you can do if its your videos that are the cause is use a video converter to shink the size of the movie then re import it

Not that i know of. Come on slinky its time to spend a little money and get a new one.