The FCC has formally designated Huawei and ZTE as posing threats to US national security.
GSMA said that participants from China’s Hubei province would not be allowed to attend MWC
GSMA said that no-one from China's Hubei province would be allowed to attend the Mobile World Congress.
Amazon is the fourth company to pull out, following LG Electronics, Ericsson and US chipmaker Nvidia.
Last week, UK announced it was giving Huawei a role in its new generation of telecoms infrastructure.
Huawei and ZTE would have 30 days to contest the FCC's national security risk designation.
The ban restricts the US government from buying equipment or services from Chinese telecom companies.
This ZTE phone is not going to be the first to come with dual-screens for giving the user a full-screen layout.
Huawei, the world’s biggest maker of telecoms network gear, has been blacklisted by the US government.
The US will allow Huawei to purchase American-made goods in order to maintain existing networks.
The CIA accused Huawei of receiving funding from China’s National Security Commission and others.
Officials from more than 30 countries will meet May 2-3 to agree on security principles for 5G networks.
MIT has joined a list of US educational institutes that are ditching telecom equipment made by Huawei.
The device looks to have thicker bezels than the Mate X and is running Oppo's proprietary ColorOS.
ZTE Axon 10 Pro 5G features triple rear cameras, in-display fingerprint reader and a Snapdragon855.
Qualcomm is expected to talk about its 5G plans later in the evening, followed by a 5G roundtable.
Huawei will be raised with U.S. attorneys and the attorney general in the coming weeks
The official, however, said that the Chinese company has not received any objection from the Indian government so far.
Huawei, the world’s biggest producer of telecoms equipment has been under international scrutiny.
Huawei faces international scrutiny over its ties with the Chinese government.