Q: My iphone was remotely locked, by accident i dont have the code and dont know how it got locked, how can i unlock it

I have the find my iphone installed on my ipad and tested it out to see if it could find my iphone.  Everything seemed to work. Acouple of hours later i find that my iphone is locked.  I didnt remotely lock it and i dont know what the code is so i cant unlock it.  I am assuming after much searching that i must have remotely locked it by accident, but the phone wasnt locked before this so i have no code for it.  What code would it default to when remotely locking it if there was no code there in the first place.

Please help!!!!

Tash