Active date check

[HMHabibullah]

Cam someone please help me How can I check authenticity/active date my Samsung phone 

[Mohit_08]

Go to settings > search auto blocker and turn that off. Go to the phone dialer and dial this code: *#12580*369#. You will see something named RF cal; the actual activation date will be mentioned there in YYYYMMDD format

[Timothy2]

https://r2.community.samsung.com/t5/Galaxy-S/Who-Did-It-Better/td-p/19371674?src=ShareByUserCM

[monalraj1000]

My activation date is note same as I activated it.