Hello Ada :) When I tried to use the USB modem directly on my PC, true IP (11x.x.x.x) is obtained and my web server is accessible from internet. So I am quite sure it's the problem of the router,...

Many ISP provides virtual IP, like 10.x.x.x, to their clients. It's fine for general internet usage. It's however the internal network cannot be accessed from outside with virtual IP. That's why I...

If I am able to connect the manually entered APN, I will get the real IP instead of virtual IP. It can be done when I insert my USB dongle directly to PC. Also, it is impossible that for the router...

Region : Hongkong Model : TL-MR3220 Hardware Version : V1 Firmware Version : 3.14.2 Build 120822 Rel.57775n ISP : 123 In order to use public IP provided by the ISP, I have to enter the specific APN....