While some universities might offer *some* components of an MPhil online (like coursework), the research and dissertation phases usually demand on-campus presence or at least regular, structured interaction with supervisors via video conferencing and in-person meetings at intervals.
Therefore, finding a fully online, recognized MPhil program is highly unlikely. If you find a program advertised as such, it's crucial to thoroughly verify its accreditation and reputation before enrolling. Look for reputable university rankings and accreditation bodies specific to your region. It's safer to assume that most MPhil programs will require some form of on-campus presence or regular in-person interaction.