Reliance Jio, which is expected to roll out commercial services in the coming months, has similar offers running in partnerships with Samsung and LG.
"Under the terms of the Jio Preview Offer, consumers who purchase Micromax 4G smart devices will get Reliance Jio 4G SIM to get complementary access to unlimited HD Voice, Video calling, unlimited SMS, unlimited High-Speed Data services, and access to Jio Apps," Micromax Chief Marketing Officer Shubhajit Sen said.
Micromax's subsidiary YU also said buyers of any YU smartphone will get free voice and data services in the trial period with immediate effect.
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Meanwhile, sources said that Reliance Jio has also partnered with handset makers TCL and Alcatel to allow customers to upgrade to 4G-LTE technology.
Jio's 4G-LTE services include unlimited HD Voice calls and video calls, unlimited SMS, unlimited high-speed data and a host of premium apps like JioPlay, JioOnDemand, JioBeats, JioMags, JioXpressNews, JioDrive, JioSecurity, and JioMoney.
