Adultary

hello,

IF my friend want to file adultary case against his wife is it possible after 3 years ,actually he has no evdidence and even need to get all history of hers how can he get last 3 years calll history as only on MSP 6 months call history available??His logic is very simple that since she used to call particualr number 50 times day so can it help him to adultary case??