The age at which your popularity reaches its peak can now be revealed, and it's 25.
By your mid 20s, you have the biggest social network, and you receive the highest number of phone calls.
Scientists analysed a year's worth of phone records for 3.2 million customers from a European phone company.
They found that after a peak of calls at 25, your regular social connections nosedives until you hit 45.
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Most people have regular phone contact with around 15 people every month.
That's around the same number we see face to face each month, which implies that we're not becoming less sociable because of mobile phones.
