How To Load One Recharge Card Twice on MTN glo Etisalat Airtel

I actually saw this post and decided to share it here due to the fact that mtn and other networks must suffer for our money they've stolen

Do you know you can load any recharge card
double on your sim?
It sounds stupid even when my co-worker told
me about this trick though it work once for him.
Two identical phones are needed, two same
network SIMs and a recharge card of any
amount.
Type your secret code pin on both devices, when
you want to send, just send the both two phone
at the same time and the credit will enter to
both two phone.
The secret is the two phone you used to load
that one credit is the same phone, the same
server, network signal, running roaming, same
version, no differences between them. Gbam!