"Our Ministry enquired into how prepared they (Ringing Bells) are, whether they can provide a phone for Rs 251 or not. Whether they have the BIS certificate or not, we have spoken to them," Prasad told reporters here.
He added that this was done to ensure that there are no discrepancies later.
"If there are any, we will take action as per the law. Our department is keeping a watch," he said.
Ringing Bells has said the manufacturing cost of the phone is about Rs 2,500, which will be recovered through a series of measures like economies of scale, innovative marketing, reduction in duties and creating an e-commerce marketplace.
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The I-T Department is also looking into the financial structure of the company and has obtained documents, including those from the Registrar of Companies (RoC), in this regard.
They said the price of the device with the said specifications could not be below Rs 3,500 even after a subsidised sale.
There was also a controversy around the Noida-based firm showcasing a rival company Adcom's handset as its own.
Despite the controversies, Ringing Bells managed to received over 6 crore registrations in two days.