Complex sentence: Ncell Private Ltd. stands as a privately owned GSM mobile operator in Nepal and is the first company to operate private GSM services in telecommunications sector of Nepal with the brand name "MERO MOBILE" which was rebranded as Ncell in 12 March 2010.
Split into simpler sentences: Ncell Private Ltd. stands as a privately owned GSM mobile operator in Nepal. It is the first company to operate private GSM services in telecommunications sector of Nepal with the brand name "MERO MOBILE," which was re-branded as Ncell in 12 March 2010.