A multi-carrier GSM phone with two, three or four SIM cards. Dual-SIM phones are popular with global travelers who use local and foreign carriers as well as people who want a business and personal ...

The use of Reliance Jio SIM cards as the primary network for voice calls by multi-SIM holders increased in 2018, as per a new report from UBS. About 92 percent of the Jio subscribers used the ...