how to keep the SIMs active ( will calling toll...

how to keep the SIMs active ( will calling toll free number work)

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Deal Cadet
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so as we all might be having some extra sim cards what are the norms I have heard that you have to do one call for 3 months once atleast to keep the SIM card active but what is the reality I am not sure so kindly suggest what are the best possible way to keep the SIM active also I have a very very important question as the SIM cards run out of balance is it possible for us to make a call to any toll free number and keep the SIM card active every 3 months one call to a toll free number

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Deal Subedar
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Pahle bato kinte sim cards h tumhare paas ?

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