<prompt> Human: After some rough periods, my credit score is decent now mid 700s, but Id like to improve it. I have a few high end credit cards with great benefits, all of which are paid off monthly with no delinquencies. I also have some department store lines of credit Macys, etc.. But Ive been advised to take on an installment loan. However, I did exactly that -- financing my last phone through Google just to improve my credit score, and paying it off every month for the last year. I was surprised when I just checked my TransUnion report that it didnt seem to be listed. What sorts of loans would show on my credit report and improve the score?No house; I rent. I own my car outright and dont intend to get another anytime soon.EDITING TO CLARIFY: Im particularly interested in knowing why the Google loan didnt show up on the credit report. It was a no-interest loan offered solely to finance a smartphone. If this sort of loan isnt beneficial, I wont use them in the future. And if its not helping, Id be happier just to pay off the existing loan now. One less thing to think about.  <response>: Dont pay interest to increase your score. Just let it age and be responsible. 