Free recharge trick

FOR fUN ACTUALLY , NOT FOR MALICIOUS INTENTS !

Guys u might know abt this recharge trick. . . But anyway i thought i'll add it here. . . If u have two or more airtel connections . . . U could recharge both the sims with one paper coupon. . . Dial 123 on both the phones enter the 16 digit pin number. . . . And press 1 on both the phones simultaneously. . . . Both the sims are recharged . . . Tested on airtel works for other operators i think. .