The Cellular Operators’ Association of India (COAI) is unhappy with a batch of MediaTek-powered dual-SIM smartphones that are hampering 4G connectivity.

COAI is reportedly seeking governmental intervention to pull the faulty, MediaTek-powered smartphones from the market and to mandate higher standards for testing of handsets.

The Economic Times reports that the Director General of COAI, Rajan Mathews said as much in a letter penned to the Telecom Regulatory Authority of India (Trai).

The issue is specific to dual-SIM devices powered by MediaTek that support 4G-LTE in the primary slot and 2G in the other. When a 4G-LTE SIM is placed in the slot for a 2G SIM, 4G throughput on the network belonging to the operator of the primary SIM falls by as much as 40 percent, alleges COAI.

MediaTek has reportedly acknowledged the issue and claims to be treating the issue with “utmost priority.”

In the meantime, COAI is pushing for strong and quick action against the devices and urges the government to phase out 2G SIM slots entirely. The COAI would also like such faulty devices to be banned.

As the COAI points out, 35 percent of the devices sold in India are powered by MediaTek, making a move to ban faulty devices a rather significant one.