Android cellular mobile not seeing network Galaxy Z Fold 3 5G SM-F926u

Community Support Android
1

Hi, I have a Galaxy Z Fold 3 5G SM-F926u that sees the zerotier network when on wifi (not sure if it’s using zerotier), and definitely not seeing anything when on mobile/cellular.

I have enabled cellular data and checked Disable ipv6.
I am unable to ping anything on my home network.

I have a cable router from the cable company, with a asus merlin router handing out DHCP and a pihole with a static ip connected to the cable router. The asus merlin router is getting DNS from the pihole.
The pihole is doing dns over https.

I have been able to get a drone on 4g to connect to the home zerotier network wihtout a problem. The drong is on googlefi sim card.

The android is on tmobile.

whew.

UPDATE:
So I can ping via ip address from my phone on cellular to a device on my local network. Is it possible for local DNS resolution? Or is that asking to much?

I am unable to stream video from a device on the network to my mobile using cellular.

2

Unfortunately some cell providers are just extraordinarily hostile to peer-to-peer communication. Sometimes it even differs between regions on the same provider, and we don’t have a lot of information to go by on how or why. I have T-Mobile myself and everything works fine in my area on both my Android and iOS handsets. Meanwhile, others on T-Mobile in other parts of the country have issues. Wish there was more I could offer for help, but there really isn’t at this time.

3

I’m friends with the tmobile corporate rep in my area. Anything (buzzwords) I should bust his balls on? p2p? Anything else? I think I heard the word ‘punching’ once.

4

I should be able to ping it’s local zt ip address from local, right?
I had reformatted to a 32bit os, added zt apt, deleted the old record in the webpanel and then readded, it says it’s there, but when I ping itself, it’s not pinging…

5

how are you installing via APT on Android? Never heard of that before. All we support on Android is the Android package.

6

The drone is apt on RPI4B+ raspbian, running on a 4g dongle. I think i installed it with apt…either way, the zt-cli is on the pi.

EDIT: Just realized I never mentioned the drone on 4g; the 4g dongle is on google fi.

7

Ive got a couple issues going on here; let me get back to you on this. Thank you.

8

Ahh I see. I was confused as the topic at hand is about Android.

At any rate, if you’re pinging the managed IP address of the local machine, it should indeed respond:

15: ztmjfonbjb: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 2800 qdisc pfifo_fast state UNKNOWN group default qlen 1000
    link/ether 3e:af:14:4c:64:84 brd ff:ff:ff:ff:ff:ff
    inet 10.6.6.145/23 brd 10.6.7.255 scope global ztmjfonbjb
       valid_lft forever preferred_lft forever
    inet 169.254.63.206/16 brd 169.254.255.255 scope global ztmjfonbjb
       valid_lft forever preferred_lft forever
    inet6 fd80:56c2:e21c:2467:3d99:93c8:3050:8646/88 scope global 
       valid_lft forever preferred_lft forever
    inet6 fe80::3caf:14ff:fe4c:6484/64 scope link 
       valid_lft forever preferred_lft forever

grant@pihole:~ $ ping 10.6.6.145
PING 10.6.6.145 (10.6.6.145) 56(84) bytes of data.
64 bytes from 10.6.6.145: icmp_seq=1 ttl=64 time=0.139 ms
64 bytes from 10.6.6.145: icmp_seq=2 ttl=64 time=0.104 ms
64 bytes from 10.6.6.145: icmp_seq=3 ttl=64 time=0.140 ms
64 bytes from 10.6.6.145: icmp_seq=4 ttl=64 time=0.145 ms
^C
--- 10.6.6.145 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 120ms
rtt min/avg/max/mdev = 0.104/0.132/0.145/0.016 ms
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