I feel like my mum's restraining me too much. she doesnt like me giving my num 2 guys or any1 4 dat matter.?

hw do i convince her that i cn take care of myself? im a 15 year old girl from malaysia, fyi. :) i give my num 2 certain ppl i feel i cn trust in facebook. bt she doesnt lyk it n threatens 2 take my phone away. im the kind of person who doesnt like to be controlled.. any suggestions??