iphone 11 to 13? depende. if you don't need the magsafe feature, better camera, faster chips - then NO. if security patches? NO, supported pa din naman ng latest IOS yung 11. if dahil naka-upgrade na yung iba and ayaw mo ma-left behind then GO. you can sell the 11's at higher price pa since covered pa din sya ng latest IOS siguro up to next year. we don't know kasi ung x-series nila supported pa din 'till now.
kaya depende pa din sayo talaga. sell the 11 high now para konti lang idagdag mo for the 13. can't give you an EXACT advice since di ko alam ang financial status mo. if you lived by kinsenas/katapusan, then don't. iphone 11 IS still a great phone. pero kung may extra savings ka na nakalaan talaga for phone upgrade then GO!
