CallingMart takes 5% to 10% off the retail cost of select prepaid cell phone refill orders of $18 or more via the coupon codes below. The deals, each ending June 18:

10% off AT&T Go Phone refills via code "FD1410"

7% off Tracfone and Verizon refills via code "FD147"

5% off for Net10, Pageplus, Simple Mobile, H2O, Cricket, Red Pocket, and Airvoice refills via code "FD145"