@SteakandMince Hi, what client devices were you using to test the wireless speed? and were you on 2.4GHz or 5GHz WiFi? You could follow this guide to check wireless link rate on the client device,...

@Cameron_ Based on the userguide, the USB port on TD-W9970 is used to connect USB modem instead of storage device.

@Tartan TP-Link 3G/4G products cannot do that, they are only used to receive existing 3G/4G signal for data internet.

@yigoro The WiFi speed can be affected by many factors, except for the router wireless specification and performance, it would be related to the client devices and environment as well. For TP-Link...

@yigoro I am afraid guest network will not work in AP mode, or at least it cannot isolate with the main network. If you don't mind double NATs, you could change the C3150 back to router mode.

@Mr_Arif Most of your comments are feature requests, you could submit it on feature request section. Regarding point 3, the internet speed is related to the client devices as well, it is normal that...