one sim phone,
Because it difficult to keep your phone num
ber off head,or keep track
Of it because it more than one,some phone also use three sim.
For example you are filling a form online and you need your phone
number to complete the form, without you knowing your number I advice
you to( maxi) your phone and take this code am going to give according to you
It also occur finding difficulties to give your number out all code are here
There is no help in customer care to ask,because not all people understand
Then, it just better take your phone inputs the code(free to dial) silently and get done.
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Code to check phone number.
If you are using MTN I suggests it one of the easiest way because the code are not
hard,you can also get the code in you MTN sim (*663#)
That the easiest way,you donnot need options it straight forward.
Other code are
9mobileIf you are using 9mobile(formerly etisalat)
All you need is to Dial *248# you will get you 9mobile phone number
GloIf you want to check your glo number it easy
You can check it by dialing 1224 by code *135*8#
Airtel codeCheck you airtel number is by using
*121*2*4# that the code and that all .