@Hadi2034 Hi, welcome to our community. You may refer to the official website to choose according to your need. The guide is also for your reference: Comparison of TP-Link DSL modem routers and how...

@HvB81 Hi, welcome to our community. If you feel the actual internet speed is slow, it is suggested to follow this guide to troubleshoot: What should I do if internet connection is slow when the...

@Unic Hi, welcome to our community. Here are some suggestions for your reference: 1. Update Tether app to latest from Google Play or Apple Store. 2. Reboot the router. 3. Connect your phone to other...

@gioo Hi, welcome to our community. You may try to download the firmware of your device version TL-MR6400(APAC) V5.30 from this official website. How to upgrade the firmware version of TP-Link...

@Giovanni_Parma Hi, welcome to our community. As we know, the performance of 5G external antennas is closely tied to the current SIM operators and nearby cell towers, it is hard to say the result. It...

@LK2024 Hi, welcome to our community. May I confirm what service the port 37779 is for? Did you set the device as 3G/4G router mode? Is there any error message if it does not work? You may share more...