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Hello Guys,
So I'm on Simple Mobile (on t-mobile network) and I activated mobile internet soon as I got my vibrant. Before, I used wi-fi and everything worked well. But when I enabled mobile internet (My provider gave me settings for G1 & G2. I thought that it would be good enough for my vibrant), I faced these problems
*The default web browser won't connect to internet
*Other applications seem to work fine
*I can browse android market but any downloads I make are unsuccessful.
Its just so weird that some apps are able to connect to internet and some don't. Is this a known issue or is it something with the settings I got from my provider?
any help/comments would be appreciated!
Different apps probably communicate on different ports. I know when I got mine from T-Mobile the rep had to edit my account to add the Android data plan even though I already had unlimited data he just needed to change the provisioning. The only reason I can think of is that maybe it unlocked different ports.
Hi,
Firstly I should introduce myself, my name is George, live in Essex and have a passion for cars and gadgets.
I've been roaming this forum since I had my first android device a HTC Hero and try and use search as much as possible rather than repeating other peoples problems but I am properly stuck with this one..
To be short,
Device Details:
Device: Google Nexus 4
Android Version: 4.2.1
Carrier: Orange (EE)
Problem: Portable hotspot is active and I can connect to it from various devices but there is no data pass through.
Solutions tried:
Changing the APN type to every possible solution mentioned (i.e consumer broadband etc)
Using both open and sercured sercurity on the hotspot
Connecting using everything from another phone to my Google Chromebook and all imbetween
I've read there has been mention of Orange blocking this but most people find this isn't the case and its usually fixed via the APN.
The only thing that looks slightly odd is that an ipconfig on my windows machine(s) shows 192.168.xxx.xxx yet the IP address displayed by my Nexus is 10.166.xxx.xxx and if I ping my Nexus's IP from my machine i do get a response.... (all when connected to the hotspot)
Even with a ip release/renew still picks up 192.168
So that is my issue....
I can't think of anything else bar a factory reset which i'd rather not do just yet so thought i'd ask here first I geuinely searched everywhere!
any help would be much appreciated....
Don't mean to bump this but if anyone could offer any advice it would be much appreciated!
Even if someone could just confirm they are using the Orange/EE network with the Nexus 4 and has it working?
Thank you!!
i'm also on orange (EE).
bummer. mine's not working either. i thought it was but i think i was connecting to my router's wifi instead.
i also tried bluetooth tethering but couldn't get that working at all.
A sort of "me too", here: I'm also an Orange (EE) customer who can't get WiFi (or Bluetooth) tethering to work. However, USB tethering works fine - just appears to install a RNDIS virtual Ethernet adapter, and then just works.
Using Wireshark, I noticed that DNS lookups (which use the phone as a DNS server/ proxy) actually work. However, SYNs for connections to hosts on the Internet go unanswered. I'm beginning to suspect that the phone just isn't forwarding packets from the WiFi interface to the cell interface (but no idea why)
As a sort of aside: I'm pretty sure this used to work on my Motorola Atrix via Orange.
Having the exact same problem, running CM10.1.
Have messed around with APN settings but does nothing, laptop connects phone and even shows as having internet access but trying to visit any site just times out.
I have tried the exact same hotspot configuration with a giffgaff (O2) sim card and it works fine, so it must be Orange!
So I think I got free tethering to work on my MG with tmobile $30 prepaid plan by changing the APN, but not 100% sure if I got the process down correctly since I've been tinkering, rooted and still on 4.3.
Anyways, maybe you guys can give a try and see if it works. This is aimed towards t-mobile users who don't have hotspot as part of their plan or have already exhausted their monthy tethering limit.
steps:
- go to settings > More....> mobile networks > Access Point names
- add a new APN by hitting the "+" sign
- Set "Name" to what ever you'd like (e.g. Hotspot4life)
- Set "APN" to fast.t-mobile.com
- Set "APN protocol" to IPv4/IPv6 or IPv4
- Leave everything else untouched
- hit menu button then select save
- Select the APN just created.
- Active native tethering (assuming you've adjusted ID and password already to your liking)
- If it works, go back into settings and select old APN... and check if tethering has been blocked.
Note: there's no need to reboot when switching APNs.
If it doesn't work, then a file change I did beforehand while rooted made a difference or something else was a factor.
neugenusis said:
So I think I got free tethering to work on my MG with tmobile $30 prepaid plan by changing the APN, but not 100% sure if I got the process down correctly since I've been tinkering, rooted and still on 4.3.
Anyways, maybe you guys can give a try and see if it works. This is aimed towards t-mobile users who don't have hotspot as part of their plan or have already exhausted their monthy tethering limit.
steps:
- go to settings > More....> mobile networks > Access Point names
- add a new APN by hitting the "+" sign
- Set "Name" to what ever you'd like (e.g. Hotspot4life)
- Set "APN" to fast.t-tmobile.com
- Set "APN protocol" to IPv4/IPv6 or IPv4
- Leave everything else untouched
- hit menu button then select save
- Select the APN just created.
- Active native tethering (assuming you've adjusted ID and password already to your liking)
- If it works, go back into settings and select old APN... and check if tethering has been blocked.
Note: there's no need to reboot when switching APNs.
If it doesn't work, then a file change I did beforehand while rooted made a difference or something else was a factor.
Click to expand...
Click to collapse
t mobile and Three use Packet Sniffing to check the file headers to detect tethering. If you tether an iOS device or an OSX device to your phone, often they will not get flagged and the tethering will work. If you use a Windows PC or other device it will be detected immediately. I mention this, as it could be a factor if you tried tethering with an ipad or something and got it to work. Messing with the APN on Three has no effect, so I'd be surprised if it works with T Mobile.
Thanks for the tip! I found that this works, but unreliably on my Moto G.
I just got a MG last week and was frustrated to find tethering would not work at all out of the box. I stumbled across your post and made the changes you recommended and it worked very well at first - for maybe15 minutes or so. Then I noticed my Chromebook lost connection and upon further diagnosis it was the Moto G that lost connection to the T-Mobile network. I tried to turn of tethering, but that didn't help and I finally had to reboot the phone to get it back on the network. I switched back to the default APN and the phone worked reliably again, but obviously not tethering. In the past couple days I've tried the new APN with your settings a few times and get similar results - it works for a while, but then the phone loses cell connectivity. I've since found that I toggling Airplane Mode on and off will restart the cell connection and tethering will also start working again, so it kind of works but not as well as it should.
I've been doing more searching regarding the fast.t-mobile.com APN and other threads seem to indicate that APN is specifically for LTE phones. Since the Moto G doesn't have an LTE chip, I wonder if that's causing the reliability problem?
Brandon
PS - I think there might be a typo in your instructions and fast.t-tmobile.com should be fast.t-mobile.com - with just 1 t in the t-mobile. Thanks again!
theragtopman said:
PS - I think there might be a typo in your instructions and fast.t-tmobile.com should be fast.t-mobile.com - with just 1 t in the t-mobile. Thanks again!
Click to expand...
Click to collapse
You're right. I've fixed it. Thanks.
I rarely tether, so I haven't used it in every scenario. But when I do tether, its while tethering to my tablet, my friend's phone, or desktop/laptop WITH user agent switcher on Chrome to mask the desktop/laptop as a mobile device. After reading your post, I tethered to my laptop for an hour and did not encounter any issues. Do you lose connectivity even when the phone's signal strength is strong? Have you tried tethering to a different device (mobile)?
Thanks for the follow up. I've been trying it again today from my home where I get better cellular signal strength, but I'm getting similar results. It connects up and runs for 15-30 minutes and then starts flaking out. After rebooting both the phone and Chromebook, the Chromebook kept trying to go to a T-Mobile sign-in page, but couldn't even load that. And I too am using a Chrome extension to change the user agent to Android. The Moto G seems to be working fine and not losing it's connection this time.
I have also been able to test tethering on a Nexus 4 running Android 4.4.2 today and the Chromebook is connecting just fine and staying connected - no problems at all. I compared the APN settings between the 2 phones and the Nexus has the MMSC entry filled out (which xda won't allow me to post here because i'm too new), so I added that into the Moto G, but it did not help. Darn. I really like the Moto G, but really need reliable tethering. Thanks again...
theragtopman said:
Thanks for the follow up. I've been trying it again today from my home where I get better cellular signal strength, but I'm getting similar results. It connects up and runs for 15-30 minutes and then starts flaking out. After rebooting both the phone and Chromebook, the Chromebook kept trying to go to a T-Mobile sign-in page, but couldn't even load that. And I too am using a Chrome extension to change the user agent to Android. The Moto G seems to be working fine and not losing it's connection this time.
I have also been able to test tethering on a Nexus 4 running Android 4.4.2 today and the Chromebook is connecting just fine and staying connected - no problems at all. I compared the APN settings between the 2 phones and the Nexus has the MMSC entry filled out (which xda won't allow me to post here because i'm too new), so I added that into the Moto G, but it did not help. Darn. I really like the Moto G, but really need reliable tethering. Thanks again...
Click to expand...
Click to collapse
You need install a User Agent String changer addon in your browser and change the string.
I use this one: https://chrome.google.com/webstore/...r-c/djflhoibgkdhkhhcedjiklpkjnoahfmg?hl=en-US
I have instructions for another device here: http://forum.xda-developers.com/showthread.php?t=2201062
Good luck.
Thanks for the recommendation! Sorry I didn't make it more clear in my reply above, but I am using a user agent switcher - currently the Ultimate User Agent Switcher. Just to be sure, I disabled that extension and installed the User-Agent Switcher for Chrome that you linked to, but unfortunately I'm getting the same result - the Chromebook takes forever and keeps trying to connect to the "Welcome to T-Mobile" page.
And I tried again with the Nexus 4 and the Chromebook connects up immediately and runs great - no T-Mobile page or any other problems. I did a little more research and found a post on the Nexus 4 forum recommending disabling IPV6 in the APN Protocol, so I switched both phones from IPV6/IPV4 to just IPV4 and am getting the same result on each. Both phones work fine on the cell network and Internet, but the Chromebook only tethers successfully to the Nexus 4.
theragtopman said:
Thanks for the recommendation! Sorry I didn't make it more clear in my reply above, but I am using a user agent switcher - currently the Ultimate User Agent Switcher. Just to be sure, I disabled that extension and installed the User-Agent Switcher for Chrome that you linked to, but unfortunately I'm getting the same result - the Chromebook takes forever and keeps trying to connect to the "Welcome to T-Mobile" page.
And I tried again with the Nexus 4 and the Chromebook connects up immediately and runs great - no T-Mobile page or any other problems. I did a little more research and found a post on the Nexus 4 forum recommending disabling IPV6 in the APN Protocol, so I switched both phones from IPV6/IPV4 to just IPV4 and am getting the same result on each. Both phones work fine on the cell network and Internet, but the Chromebook only tethers successfully to the Nexus 4.
Click to expand...
Click to collapse
You need to set the Firefox string in my thread. That is the only desktop browser string that works. The reason why Chromebook/Ipad/Ipod devices work is because T-Mobile allows those devices since they can all have Cellular radios in them for radio. It would block legit paying customers.
Hey - thanks for the quick follow up!
Unfortunately, I just tried all 3 of the Firefox settings in the user agent switcher and rebooted the Chromebook each time, but no joy - each time after restarting and connecting to the Moto G wi-fi hotspot the Chromebook just tries to redirect me to the T-Mobile site.
theragtopman said:
Hey - thanks for the quick follow up!
Unfortunately, I just tried all 3 of the Firefox settings in the user agent switcher and rebooted the Chromebook each time, but no joy - each time after restarting and connecting to the Moto G wi-fi hotspot the Chromebook just tries to redirect me to the T-Mobile site.
Click to expand...
Click to collapse
Do you have the T-Mobile branded Moto G? If so you may need to disable the upsell app as I did in my L9 thread. You may also need to edit /etc/apns-conf.xml
Also, use this app instead of the builtin tethering. It may be notifying the carrier of tethering.
https://code.google.com/p/android-wifi-tether/
Thanks again for more suggestions.
I am using an unlocked US GSM model of Moto G I purchased from Amazon.
I have not rooted yet, but may try that and the tethering app you linked to. I'm wondering if the stock app included on the Motorola device is the culprit, whereas the stock tethering app on the Nexus device may not be reporting back...
"Mobile HotSpot on AT&T grandfathered Unlimited Plan" If you have a regular At&t plan the hotspot is easily employed...... I have the grandfathered plan that sends me the "Call 611 to enable."
Does anyone have a way to employ the mobile hotspot on the Galaxy G935A? Seeing as there is no root, is there any coding or permission tweaks I can try to get the Hotspot to work?
FoxFi works with tethering, but turns up a 10246 permission error for Hotspot. I though I had it when I kept the system from checking my plan with At&t.....But eventually, the system picked up on the blocking I employed.
Two main reasons for me to root are Viper4Android, which there is not get-around. The second is the Mobile Hotspot. When I travel with my kids, they used to use my Rooted G3 to play Youtube, games, and interactive apps to keep them busy on long road trips.
My choices, buy a G935F on Ebay and root it.....but then I would have to sell my G935A.
Someone miraculously figures a way to root.
I find a work-around and change "permissions."
I'm leaning toward the new phone, just hate spending $700 on Ebay with electronics.......
Any help is appreciated, even the slap of reality to "just get the F" and quit screwing around with the A.....
-dmxinc
dmxinc said:
"Mobile HotSpot on AT&T grandfathered Unlimited Plan" If you have a regular At&t plan the hotspot is easily employed...... I have the grandfathered plan that sends me the "Call 611 to enable."
Does anyone have a way to employ the mobile hotspot on the Galaxy G935A? Seeing as there is no root, is there any coding or permission tweaks I can try to get the Hotspot to work?
FoxFi works with tethering, but turns up a 10246 permission error for Hotspot. I though I had it when I kept the system from checking my plan with At&t.....But eventually, the system picked up on the blocking I employed.
Two main reasons for me to root are Viper4Android, which there is not get-around. The second is the Mobile Hotspot. When I travel with my kids, they used to use my Rooted G3 to play Youtube, games, and interactive apps to keep them busy on long road trips.
My choices, buy a G935F on Ebay and root it.....but then I would have to sell my G935A.
Someone miraculously figures a way to root.
I find a work-around and change "permissions."
I'm leaning toward the new phone, just hate spending $700 on Ebay with electronics.......
Any help is appreciated, even the slap of reality to "just get the F" and quit screwing around with the A.....
-dmxinc
Click to expand...
Click to collapse
Can someone help me try this? THERE ARE NO MODIFICATIONS HERE
-I opened the mobile Hotspot app, set it up while I was connected to my home wifi network.
It worked, but used my home network as the hotspot.
-Next, I shut my wifi off and expected the error, but the phone hotspot transferred to the 4g, as long as I didn't turn the hotspot off.
I also tried this at an open cafe wifi hotspot, then turned off the phone wifi again, the hotspot remained working as long as I didn't hit the back button.
* I did get a tetherprovision.apk error, but it didn't shut the phone mobile hotspot off.
I tried this on my wifes S6 Edge, but it didn't work. Can someone try the S7 and S7 edge G935A
***To make sure it was the phone hotspot, I checked ip addresses before and after the WIFI was turned off. Ip adress changed from where I live to a place in Maryland, so fairly sure it wasn't just a fluke, but that is why I need someone to test it........Thanks
-dmxinc
I had the same challenge (unlimited data but no tether provisioning) and wanted to tether without giving up my awesome plan or pissing off my employer (my corporate plan includes international LTE roaming -- amazing!). Being unable to root and having unsuccessfully tried FoxFi (gave me an error message about internal connectivity or somesuch) I discovered Samsung already has an app for this called SideSync. It requires a USB cable but is able to set up its own hotspot.
I'm using a Mac laptop with SM-G930A and after installing SideSync on both the Mac and the phone, and launching both, I can detect the phone connection (apparently this works better when the app is running in the background but not on its home screen). Then I can click the "More" button on the Mac side and launch "Enable Mobile Hotspot". You'll need to give it MTP and several other access permissions the first time, but it should create and configure a WAP of the form "SIDESYNC_HOTSPOT_##:##" and connect the Mac to it. This works even if your phone provisioning wouldn't normally allow it. Easy!
aikidork said:
I had the same challenge (unlimited data but no tether provisioning) and wanted to tether without giving up my awesome plan or pissing off my employer (my corporate plan includes international LTE roaming -- amazing!). Being unable to root and having unsuccessfully tried FoxFi (gave me an error message about internal connectivity or somesuch) I discovered Samsung already has an app for this called SideSync. It requires a USB cable but is able to set up its own hotspot.
I'm using a Mac laptop with SM-G930A and after installing SideSync on both the Mac and the phone, and launching both, I can detect the phone connection (apparently this works better when the app is running in the background but not on its home screen). Then I can click the "More" button on the Mac side and launch "Enable Mobile Hotspot". You'll need to give it MTP and several other access permissions the first time, but it should create and configure a WAP of the form "SIDESYNC_HOTSPOT_##:##" and connect the Mac to it. This works even if your phone provisioning wouldn't normally allow it. Easy!
Click to expand...
Click to collapse
I am on Win 10, I will try and find Sidesync, or an equivalent thanks! But, that is exactly what I was looking for!
If I find a Windows equivalent, I will repost.
Thanks again,.
I found it but it says both devices utilize the same wifi connection. Will it Direct Connect them and use 4g as the wifi?
dmxinc said:
I am on Win 10, I will try and find Sidesync, or an equivalent thanks! But, that is exactly what I was looking for!
If I find a Windows equivalent, I will repost.
Thanks again,.
I found it but it says both devices utilize the same wifi connection. Will it Direct Connect them and use 4g as the wifi?
Click to expand...
Click to collapse
Not sure what you mean by utilizing the same wifi connection -- It is NOT the WiFi Direct feature if that's what you mean..if the phone is connected in that mode, this will need to be turned off first. Mine handles the setup of the hotspot automatically (at least on Mac). It's a little wonky but usually works on the first try. And yes... once it's working, the phone shows that it's got a device connected via wi-fi sharing icon, and the laptop shows it's using SIDESYNC_HOTSPOT.
aikidork said:
Not sure what you mean by utilizing the same wifi connection -- It is NOT the WiFi Direct feature if that's what you ttle wonky but usually works on the first try. And yes... once it's working, the phone shows that it's got a device connected via wi-fi sharing icon, and the laptop shows it's using SIDESYNC_HOTSPOT.
Click to expand...
Click to collapse
If figured it wasn't the Direct. It installed and loaded right up, but it disconnected on the PC side every few seconds. I think it might be my A.V. software......I'm going to mess around with it this weekend to see if that's the issue. Thanks for tips.
So sidesync is a hotspot app, must be installed on all devices that want to connect to hotspot (in this case galaxy g930a). Is this correct?
tl;dr: When my phone (Sony Xperia Z5 compact, Android 6) connects to a wifi with no internet, I want to use the local network on the wifi but use the internet from my mobile data. Instead what happens mobile data doesn't switch back on while connected to wifi with no internet.
I have been trying to find a solution for this since forever. My camera creates a local wifi connection which I can connect to to view the camera as well as controlling it. The downside is that while connected to this network my cellular data gets switched off, despite this wifi network not having any internet. So while using my camera I have no way to access the internet. It wasn't a huge problem up until recently when the app I use is introducing livestreaming. I really want to use it but I am unable to find any way how to keep my phone connected to this wifi network (and being able to use it), while any internet data goes over 4G. I am using android 6.0.1. I am quite sure I was able to do this on my previous phone with an older Android version but I cannot find said option (smart network switch or something?) anymore in the wifi settings. Nor any recent similar topics with people with the same question? Anyone that knows more about this?
My phone is rooted. If I need to do any system changes I can do that.
I didnt get what you were trying saying.Do you know that you cant use mobile data and wifi simultaneously unless your device is rooted.If your phone is rooted then try using "download booster"
hh950430 said:
I didnt get what you were trying saying.Do you know that you cant use mobile data and wifi simultaneously unless your device is rooted.
Click to expand...
Click to collapse
Err, sorry, lol. I have wifi network that has no internet, just a local network. I'd like to be connected to that wifi network AND be able to use internet over my mobile data both at the same time. As it is right now, my mobile data gets disabled even when the wifi network has no internet access.
I have talked to two friends of mine about it and both say this is already possible in Android. One friend sent me a screenshot of an option he has in his wifi settings called 'Switch to mobile data' which gets enabled when the wifi network has no internet. My other friend said he doesn't have this option but claims it has been a default feature of Android since lollipop. He tested it on his phone and indeed it works as expected. Both have an unrooted phone with stock Android. So now there is me with my brand new phone and Android 6 and I can't find this option nor does it seem to do what I want by default. I'm confused.
As I mentioned, my phone is rooted so if there is a way to turn this feature on using root, I can totally do that if someone knows how.
As i said try using "Download Booster" It allows you to use wifi and mobile data at the same time just google it.
hh950430 said:
As i said try using "Download Booster" It allows you to use wifi and mobile data at the same time just google it.
Click to expand...
Click to collapse
That appears to be just a download manager if I am correct? I don't need to download anything. I just want to be able to use my existing apps to use my mobile internet when I am connected to wifi (that has no internet).
This is the exactly the thing I'm after. Screenshot from my friend's phone (LG G4 with Android 6.0): (*link removed). My other friend who also has this functionality working has a Nexus 5 with Android 6.0.1.
* Forum doesn't let me post screenshots.. But basically in his wifi settings he has an option called "Switch to mobile data". The box says "Internet unavailable via connected Wi-Fi. Stay connected to Wi-Fi, but use mobile data. Data charges may apply."
Again, I have Sony Xperia Z5 compact with Android 6.0.1 and I can't find this. Have I bought the wrong phone or is it fixable? At this point I am more than happy to even take a custom rom route.
You cannot use wifi and internet at the same time as they are completely different hardware components, using different air waves, so there's no conflicts between them. Better use internet through your wifi or use bluetooth tethering.As for the "switch to mobile data option" it disconnectes you from your wifi if it has no internet and connects you to your mobile data so it doesnt lets you use your wifi and mobile data at the same time
hh950430 said:
You cannot use wifi and internet at the same time as they are completely different hardware components, using different air waves, so there's no conflicts between them. Better use internet through your wifi or use bluetooth tethering.As for the "switch to mobile data option" it disconnectes you from your wifi if it has no internet and connects you to your mobile data so it doesnt lets you use your wifi and mobile data at the same time
Click to expand...
Click to collapse
It actually clearly mentions that it keeps connected to the wifi. He tested it and indeed he could use the local network on the wifi side and use the internet through his mobile data simultaneously. Both friends haven't rooted their phones or anything. This is just a default functionality for them. I have now tested it also on my older phones (Oneplus One and HTC One M8) and all phones can't have both connections open at the same time.
This wifi network is created by my camera by the way and I can't change much about it. The DJI drone I control does the same thing. When I am connected to the camera or drone I lose my mobile internet connection.
I don't have any other device that has access to internet here. We don't have cabled internet, only mobile internet.
Interestingly, in the developers options there is an option called "Mobile data always active" ("Always keep mobile data active, even when Wi-Fi is active"). I've tried it many times, rebooted my phone but this doesn't actually do anything. Even with this option on when wifi is connected the mobile data gets turned off.
This is beyond annoying!
I too have struggled to find a solution to this problem. I do not have a WAN connection to my home network. It is LAN only. I have four PC's, three Sonos speakers, two hdhomerun TV tuners, and various hand held devices that all use the LAN. All I want to do is be able to use my Moto X Pure to control Sonos and file sync to my LAN via wifi and simultaneously use mobile data for WAN stuff. I know the mobile connection is active with wifi enabled because I can see it when running if config, up route show etc... I am trying to learn about the routing tables to see if I can fix this myself. I love my android devices and am loyal, but this is beyond dumb! Any suggestions????
How to fix for android
okay so for anyone who doesnt know still go into the about phone option in your phone settings, then click on kernel version, build model, etc til one pops up with a flash notification saying click so many more times and youll become a dev. once you done that go into the developer menu and scroll too wifi assist or force mobile data upon wifi connection. exit out , open your app , bobs your uncle
Thank you for the answer.
I tried with my Huawei but it doesn't work. Could you tell with which phone you made it work ? Thank you !!
Ok here we go, after 12 years this my first post.
Above suggestions related with developer options nothing to do with OPs requirement. Those option only allows the device rapidly switch to mobile data when the WiFi signal gets weak. Since you always close to your DSLR camera it solves nothing because WiFi signal is always strong.
Root cause of the problem is you can not have 2 default gateways (i.e. router address) for your networks in any operating system (Actually you can but you have to set static routes, which is a pain in the ass for regular users)
iOS handles this in a very simple way. Set your wifi connection to static IP address instead of DHCP and leave your default gateway or router address blank. Viola you can have 3G/LTE data while you connected your camera and now you can sent your downloaded pictures via Whatapp while you still connected to your camera via WiFi. (In my case Panasonic Lumix)
I stumbled upon this thread via Google since I needed the same thing now with Android. But iOS way failed. Actually I am shocked that you cannot leave WiFi Gateway address blank in Androdid 8.0! Save button grays out if you leave it blank. This is really weird. At least with Galaxy S8 Duos with Android 8.0
So anybody know how to setup a WiFi network without a default gateway, please share.
Is this phone specific or something? Never had that happen, I have no problem with wifi being on without internet and using cell data.
I don't think the UI really exposes anything like it directly but you can technically have multiple gateways; it's not something your average user will understand (policy routing)..
Having said that, if you're attached to an AP you should at least see a /24 route out your wireless interface (standard dhcp lease). It's quite common for the AP to have client isolation but are you sure you're not using something like Wifi Direct or even adhoc?
Similar Experience
I have been through this experience long ago. All I did was to sell the phone and bought a new one.