How to Get Free 100MB On Etisalat Sim

Hi Etisalat Is Giving out 100MB on TECNO Q1 here is the Imei of Q1 U can Tweak it .. Here is The Imei 86702801121.... Then tweak d last 4 digit.... Then dial *971*1# NOTE : it can be done In Each Month.......... It can be done 12 tyms in Year....