A Friend shared this bitter experience recently,i decide shout out loud to my fellows here.
He received a call on checking number,it was his junior sister's no:, he receiver button..Behold a male strange voice...Let's read further dialogue...
Friend:hallo who this?
Stranger:do you know whose no: is this?
Friend:Also shouting,my junior sister ofcouse who are you?
Stranger:i am calling on behalf of your sister who had an accident and very serious..Right now due to her condition,we would need #15000.for her transfer to another hospital as we have facility to handle her case.
Friend:Almostly shaking..Ok ok..let me call my aunty at abuja..she will call you back.Long run,a/c number was exchange amount of #15000.was paid to this stranger's account,thereafter the number went for two days.And on the third,the number went through this time it was the in question.
Sister:no mind me o! my phone lost and it also three days,to block and do welcome back.And the told her all that transpired.
Nigerians SHINE YO

Simple: Activate the security pin on your sim, even it is transferred to another phone, it will not be usable.
Also, that account can be traced, they should report it to the police. It will save another victim.