You need to get the back of the phone to the first magnetic head without the second reader(head) picking up on the phone. I just move the phone in slowly along the keypad till it picks it up. If I get an error I back it up a little and it works. I also go there everyday for work. So I just stood there playing with it. Trying every way till I got it working every time.
Posted via Note 5 64GB AT&T
Tried again today at Fedex with no luck. I slowly advanced the phone up that keypad until it beeped. It did but no luck. Not 100% sure if I was doing it exactly as you suggested (like is the phone's screen facing up or facing to the side as I glide it up the keypad area?) Obviously I tried on top of the swipe area as well as once on both sides of the machine. A couple times it had a promising beep that I though went through, but it it failed to complete the transaction. A couple times it had a deeper beep accompanied by the magnetic strip area blinking red and obviously that wasn't good. That happens mostly when I put the phone over the top of that swipe area. I tried so many times that my phone gave me the message that said basically something to the effect that it's not working and that I should try later.
I also tried at an In n' Out and it did not work, however, I didn't "really" try hard. There was a huge line so I didn't wanna mess with it. I'll try again when I'm not feeling the pressure behind me.
I also tried at a Subway and it did work. Both cases I had to sort of reach over the counter which is an invasive feeling, but I'm glad it worked at the gas station (inside of course) and Subway (the sandwich place, not the transportation).
I guess it's either not working on this FedEx place or I'm still not doing it right. I'm 0 for about 15 at that place. I haven't given up just yet, but I can't say I'm real hopeful that it'll work. Bummer cuz I'm there a lot.