By reading the title of this post, you might have been excited to know how you can do it. Yes. It’s true and LEGIT. You can now recharge your phone using your old recharge cards.

This method requires some mathematical calculations. So, be sure to get ready with your calculator. But, calculator isn’t required though. All calculations are just addition or subtraction.

You can watch the video above to learn about this method in detail.

## What you have to do is:

- Note down your old recharge card pin.
- Then, do some mathematical calculations there to generate new and working pin.

## Calculations that you have to do:

- For first digit, subtract 1.
- For second, subtract 1.
- For third, subtract 1.
- For fourth, subtract 2.
- For fifth, add 5.
- For sixth, subtract 1.
- For seventh, do nothing. Leave it as it is.
- For eighth, subtract 1.
- For ninth, subtract 1.
- For tenth, subtract 1.
- For eleventh, subtract 3.
- For twelfth, add 2.
- For thirteenth, subtract 2.
- For fourteenth, add 2.
- For fifteenth, add 5.
- For sixteenth, subtract 1.

Note:

- If the calculation is 2-3, take it as 12-3. For 1-2, take it as 11-2. For 0-1, take it as 10-1.
- If the calculation is 8+2=10, take the carried over 1 away. So, 8+2 = 0.
- For all other calculations like this, do in a similar way.

This method usually works for NTC recharge pins, but works for other telecommunication providers as well such as Ncell, Vodafone, Airtel, etc.

If it doesn’t work, try interchanging the values or try some more calculations.