Help Cannot ping tethered devices

[man_bp17]

Hello forum and thank you in advance for any help given! I have been struggling for months to get a working, tethered connection using my sph-l720t phone to use for an internet connection for my xbox one. My connection setup is as follows: PDAnet+ as tether app on phone>>>usb cable>>>Windows 8.1 laptop /w PDAnet+ app, shared connection /w Ethernet port>>>ethernet cable>>>Xbox One.

I have successfully established an open NAT type on my Xbox console via this method and have a great 4 bar 4g LTE connection on my phone which gives me ~11mb down & ~1.5mb up (far exceeds minimum xbox live requirements for online gaming). The problem I have been unable to overcome is a major packet loss on my xbox (100%!) Needless to say, this makes online gaming very difficult. I purchased a static public ip address for my phone, so my phone is able to be pinged from the outside with 0% packet loss.

However, on my PC AND Xbox I have 100% packet loss..I've tried everything from disabling my laptop firewall/antivirus, different cables, updating drivers, allowing all incoming/outgoing ports, giving my tethered connection a static ip address/DNS. Just. Stumped.

 

[mikedt]

A phone operating as a hotspot doesn't support UPnP and port forwarding, unlike a full blown WiFi router. Xbox requires UPnP, that's why it's showing 100% packet loss despite having apparently stable and fast internet.

The Xbox requires UPnP, Universal Plug and Play, to get around the NAT traversal of routers and hotspots. You can ping the phone OK via the static IP address you have, but you can't ping the Xbox tethered to the phone, because the phone is not forwarding the incoming ping requests to the Xbox. Because it can't instruct the phone to forward incoming packets because of the lack of UPnP, which it can do with a WiFi router. A solution would be a 3G/4G cellular router and put your SIM in that, or possibly a MyFi device, provided it supports UPnP or configurable port forwarding.

Probably 99.9% people might be tethering PCs and Macs to their phones, and the lack of UPnP and port forwarding is not a problem here, unless they're running some kind of server.

 

[man_bp17]

Thank you for the informative reply Mike. I have looked into Port Forwarder's Android app in Google Play and am wondering if it may be a possible solution to my phone's inability to forward incoming requests for my Xbox. I can't be sure if I should be forwarding to my PC's IP Address or to my Xbox's, considering my setup is-Phone>>>PC>>>Xbox and the app only allows ports to be forwarded to one IP Address.

I also have a Belkin router with UPnP capability, which I have attempted to add to my setup making it-Phone>>>PC>>>Router>>>Xbox. This proved to make no difference in my situation.

 

[rootandroideasy]

I don't know if your device is rooted or not. I have a rooted device and used X Tether and Xposed to run my Playstation 4.
I have also used Airdroid to do the same thing with my PS4. Best guess would be one of these three. Airdroid if it's non rooted. X tether module and Xposed framework or WiFi tether router app in Google play store.