Mobile phone makers have voiced opposition to the government’s call for all handsets sold in India to have GPS, since it would raise costs and make phones less affordable.

The Department of Telecom said on Monday that it will mandate all mobile phones sold in the country have a panic button that provides easy access to emergency services by January 2017, as well as a GPS feature to identify the user’s location by January 2018.

Vendors said the requirement would add as much as INR400 ($6) to entry-level feature phones.

Indian Cellular Association president Pankaj Mohindroo said in a letter to the telecoms secretary that adding a GPS module in mobile handsets will not be in the interest of consumers at the bottom of the pyramid, Economic Times reported.

The association, which represents handset makers, said the GPS component would cost about INR67 ($1), but the required software and technical upgrade would raise overall costs by INR266 to INR400.

Leading handset makers, including Samsung, LG, Micromax, Lava and Intex, have been working with the government over the past couple of years on the SOS feature, and said that adding a panic button only requires changes to the software which can be easily implemented, the Times reported.

Some vendors have already started the process and aren’t concerned by the 2017 deadline.