In some models of mobile phones, Software implementation status of controllers receiving UDP can be very difficult or even impossible . May require the use of special firmware non branding or smartphone .
Katika baadhi ya mifano ya simu za mkononi, Programu ya utekelezaji ya hadhi ya controllers kupokea UDP inaweza kuwa vigumu sana au hata haiwezekani . Unaweza kuhitaji matumizi ya niebrandowanego maalum firmware au smartphone .