Hi everyone
I read somewhere on here that UCI accepts you into their school first THEN looks at your major. If your first and second major is full they place you into Undeclared. Apparently if they rejected you its not because your major is impacted. If this is true it brings me to the question, what do they use to determine whether they accept you or not? Is GPA a big factor? Thanks in advance 
I suggest you try and TAG if possible. GPA matters, most applicants are around a 3.3 or higher, but some are slightly lower. Each school within uci sets its own gpa standards. They will look at personal statements and extra curricular activities like clubs and volunteer work too.