Asthemobilecommunicationtechnologieshaveexperiencedagreatprogressinrecentyears,mobilecomputingsystemsandsustainableinformaticstechnologieshavebecomeanintegralpartinourdailylives.Therecenttremendousdevelopmentinthesetechnologiesrangingfrommobileedgecomputingdevices,topersonalized,embeddedandsustainableapplications.The3rdInternationalConferenceonMobileComputingandSustainableInformatics(ICMCSI2022)organizedbyPulchowkCampus,InstituteofEngineering,TribhuvanUniversity,Nepalon27-28,January2022hassignificantlycontributedtoaddresstheunprecedentedresearchadvancesintheareasofmobilecomputingandsustainableinformatics.ICMCSI2022isdedicatedtoexplorethecutting-edgeapplicationsofmobilecomputingandsustainableinformaticstoenhancethefutureofmobileapplications.Thisinternationalconferenceservesaforumforresearcherstoaddressmobilenetworks,computingmodels,algorithms,sustainablemodels,andadvancedinformaticsthatsupportsthesymbiosisofmobilecomputingandsustainableinformatics.Theconferencecoversalmostalltheareasofmobilenetworks,computingandinformatics.