@EggoWaffles Hi, kindly check this article for more details to confirm if the QoS settings on the AX20 is configured incorrectly, you can try to disable it if necessary:...

@SujitKrSahoo Hi, may I know how did you find out only one antenna is working on the MR600? Is there specific testing? If the 4G connection is not stable, please refer to this troubleshooting...

@Premjith_K What kind of VoIP call are you referring to? We currently only have the TL-MR6500v supporting phone calls, you can refer to the product overview or user guide for more details:...

@Joohyun Can we confirm where did you get this 201112 version? What is the region version of the AX73, is it US or EU? Where did you purchase it? Why do you need to disable the WMM on the router?...

@Eugene29 As per the release note on the official TP-Link website, this firmware cannot be downgraded to the previous version: https://www.tp-link.com/support/download/archer-ax20/v1/#Firmware...

@Malkhan52 Hi, the MR600 does have a built-in SIM card slot, you can find this in the User Guide: https://static.tp-link.com/2021/202102/20210223/1910012928_Archer%20MR600(EU)_UG_REV2.0.0_V3.pdf...