Discounting or pro-rating the early termination fees that cellphone companies love to tack on to their contracts is becoming more common, so we thought we’d make some graphs that show the strengths and weaknesses of the different policies. As you can see, T-Mobile 2-year ETF doesn’t make any discounts until fairly late in the contract period — and their ETF of $200 is higher than either of the other two companies that offer discounts. (Sprint does not pro-rate or discount its ETF.) T-Mobile’s ETF does, however, reach a point where their discounts are steeper than Verizon and AT&T’s pro-rating.