Different brand phones have different behaviour on network without internet access - General Questions and Answers

Hello, before you hate me, my question relates with programming and I do not find anythink similar here.
So I'm develeping android. It has to send data from phone to PC via network (Wifi LAN connection, IPv4, DHCP working). There is NO internet access and never will be!!! On phones like Xiaomi Samsung Huawei and Lenovo it works like charm, but on some phones (Sony, Prestigio)(different android version on that phones, on sony probably 4.0 or 4.4 and 6.0 on prestigio) it is not working, these phones detect wifi connection differently, they connect normally but then they said there is no internet connection and show small exclamation mark next to wifi symbol although they stay connected to wifi and ping agains them works normally, but android api network operation not works anymore, only when I connect that wifi LAN network to internet, android network api started to work normally. So faced someone to similar problem? Is the a solution to make it work on network without internet access? I do not have access to problem phones so I do not can run debugger on them. I will be glad for any advice or usefull link. Sorry for bad english but it is not my native language.
PS: Please it's not problem with wifi access point or network configuration on router or phones, I am sure. Phones from xiaomi, huawei... work normally, same code, same configuration, same network without internet access.

tomas4TW said:
Hello, before you hate me, my question relates with programming and I do not find anythink similar here.
So I'm develeping android. It has to send data from phone to PC via network (Wifi LAN connection, IPv4, DHCP working). There is NO internet access and never will be!!! On phones like Xiaomi Samsung Huawei and Lenovo it works like charm, but on some phones (Sony, Prestigio)(different android version on that phones, on sony probably 4.0 or 4.4 and 6.0 on prestigio) it is not working, these phones detect wifi connection differently, they connect normally but then they said there is no internet connection and show small exclamation mark next to wifi symbol although they stay connected to wifi and ping agains them works normally, but android api network operation not works anymore, only when I connect that wifi LAN network to internet, android network api started to work normally. So faced someone to similar problem? Is the a solution to make it work on network without internet access? I do not have access to problem phones so I do not can run debugger on them. I will be glad for any advice or usefull link. Sorry for bad english but it is not my native language.
PS: Please it's not problem with wifi access point or network configuration on router or phones, I am sure. Phones from xiaomi, huawei... work normally, same code, same configuration, same network without internet access.
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Click to collapse
I don't know how you expect anyone to help solve this issue or troubleshoot what is going on if you do not have access to the devices that have the problem. If you do not have the phones in your possession to test them, we can't help you.
Sent from my SM-S767VL using Tapatalk

Related

Lumia 710 tethering , connected but no no Internet

Hi , so after I update my Lumia 710 , I got the new option of internet sharing , I tried it with a BlackBerry device and it just worked fine , on my laptop I tried to connect and the OS told me that I should turn on DHCP for Wireless networks , I did that and I just got connected and everything , my Windows7 network and sharing center shows me connected to the internet via this network , BUT still no internet access.
and ideas ?
thanks in advance
NuiMrme said:
Hi , so after I update my Lumia 710 , I got the new option of internet sharing , I tried it with a BlackBerry device and it just worked fine , on my laptop I tried to connect and the OS told me that I should turn on DHCP for Wireless networks , I did that and I just got connected and everything , my Windows7 network and sharing center shows me connected to the internet via this network , BUT still no internet access.
and ideas ?
thanks in advance
Click to expand...
Click to collapse
rk
could be your provider? if not make sure you add the connection to your home network and not public or work.
Thanks for the reply,I made sure it is home network,but what do you mean by provider,can my provider block me from accessing the 3G connection from my laptop ? People used to wire their old mobiles to work as modems to connect,why would this be different ?, i think lm missing something obvious here.
Wired tethering (where the phone acts as a cellular modem for the PC) and wifi tethering (where the phone acts as a WiFi access point) are different, and require different software. The software for the latter will frequently include checks to see if your mobile operator permits tethering. USB modem tethering works differently and, assuming you configure the PC to connect in the ame way as the phone, is essentially indistinguishable.
Note that all of the gen1 Windows phones could also do USB tethering, although it was unofficial and sometimes a bit of a hack. I don't know if the Lumias have such a hack or not, but if they do, it should work even if the WiFi tethering doesn't.
Alternatively, since you're on a 710, you could (if you want) install a custom ROM. This would enable you to use WiFi tethering without the operator check, among many other cool hacks. Nobody has yet found a way to do high-privilege hacks on a stock Lumia ROM, though.
Also, in what way does your Internet connection not work? Do you receive an IP address? A DNS server? If you type "ipconfig /all" into the command line, what output do you get? (Please, just the lines about your wireless network adapter. Alternatively, do "ipconfig /all > ipconfig.txt" to produce a text file, and then attach that to your post here.) If you type "ping google.com" does that work?
Thanks for the informative reply , it seems like it needed a restart for ping to work , Pinged Google successfully, for the browser it was my fault , I had an old proxy settings enabled , I just had to removed it and I'm posting here now using this exact connection

[Q] Multiple AP's with same SSID

Hello everyone,
I wanted to know is it possible to connect to a specific AP even if there is multiple AP's with same SSID. Android as it is its made to be simple and it will only recognize one WiFi Network...
About the problem: On my college we have a WiFi network with multiple AP's and same SSID but for some reason one of the AP's is not working correctly i would connect to another one but i cant see other AP's as they all have same SSID.
Question: How can i see all AP's even if they have same SSID and connect to specific one ? Can i use terminal or is there an App that can help me (I was unable to fin any app that would help but maybe there is something that can get the job done)
Thank you
Bump ?
As far as I know there's nothing you can do about it. Maybe there's some root-app out there which lets you connect to a specific MAC address, but Android doesnt offer such a feature by itself.
Android just connects to the strongest signal of a network it knows .. and that's it.
TheBootloader said:
As far as I know there's nothing you can do about it. Maybe there's some root-app out there which lets you connect to a specific MAC address, but Android doesnt offer such a feature by itself.
Android just connects to the strongest signal of a network it knows .. and that's it.
Click to expand...
Click to collapse
I know, that's why I'm asking on XDA so some of the Linux experts or Android Developers can suggest me something. Some app some terminal command or something ... Thanks for your response anyway

[Completed] Latest Android phones not connecting to WiFi router

At work we installed a new WiFi router a few months back. The connection is open and no one needs a password to connect to it. But many who bought android phones recently arent able to connect to it. I have a OnePlus One with android 4.4.4 which doesnt connect to the WiFi. My colleagues own Xiaomi, Motorola phones which they bought recently, which also doesnt connect to the internet.
The phones detect the WiFi signal, says the network is saved but fails to connect to it no matter what. The temporary solution is to make our laptop into a WiFi router and use it but this is seriously annoying. The router is from HP and I dont know the exam model number for it at the moment
I will be grateful if someone can find any solution for this problem. Also, I am a novice when it comes to gadgets so, if your suggestion is to manually set up my WiFi settings please do so with clear instructions or a video of some sort. However I will be happy if this problem gets solved in a straightforward manner.
Please help!
XDA Visitor said:
At work we installed a new WiFi router a few months back. The connection is open and no one needs a password to connect to it. But many who bought android phones recently arent able to connect to it. I have a OnePlus One with android 4.4.4 which doesnt connect to the WiFi. My colleagues own Xiaomi, Motorola phones which they bought recently, which also doesnt connect to the internet.
The phones detect the WiFi signal, says the network is saved but fails to connect to it no matter what. The temporary solution is to make our laptop into a WiFi router and use it but this is seriously annoying. The router is from HP and I dont know the exam model number for it at the moment
I will be grateful if someone can find any solution for this problem. Also, I am a novice when it comes to gadgets so, if your suggestion is to manually set up my WiFi settings please do so with clear instructions or a video of some sort. However I will be happy if this problem gets solved in a straightforward manner.
Please help!
Click to expand...
Click to collapse
No need to configure wifi on your device IMO.
Sounds like an issue with the wifi router.
To check an fix the internet settings of the wifi router, you will need the adminstrative access/console/password for the router.
Then you can check that all new devices afre allowed to connect. On some routers you can restrict the access to a list of known devices or by enabling a MAC address filtering.
If you find such options on the HP wifi router, disable it and restart the wifi.
And make sure that the SSID of the wifi network is visible (= not hidden). Some Android devices have issue connecting to hidden networks.
Thread closed. Thank you.

Android 6 Marshmallow Set-up Activation - Wifi - China roadblock

Since I am in China, a non-Google country, the activation is impossible. It requires Wi-Fi, which obviously I have, but all devices must connect with Google, which is impossible without the VPN. Secondly, there is no VPN option on start-up screen. So, it is in the Checking connection "up to 2 minutes" screen indefinitely. I would say this is a major BUG.
My solution will be to downgrade to 5, which I recall could go into the android without Wi-Fi first connecting with Google. Whereby, I can setup a VPN using full android OS access.
Any other solutions here to get into Android 6?
This didn't work for me, but it might be my VPN provider: If you have a laptop, connect it to the internet with an ethernet cable, turn on your VPN, and then share your connection through wifi.
In theory, this should work, but it didn't for me. And I found your thread because I was either looking for a solution, or at least a place to vent. I read somewhere on a Google forum that Google doesn't have an answer for this. We're SOL.

Is rooting the only way connect an s8 to a mac's ad hoc network

Read lots of forum posts but they all seem quite old so hoping this is possible. Created a network on my macbook and need to get the s8 to connect to it but it doesnt show under wifi networks. Installed wifi analyser and shows the adhoc connection but says android doesnt support them. Tried also writing a static ip but didnt work and im not sure if im missing something as have been trying stuff for few hours now.
Could someone 100% confirm that it isnt possible and if rooting would definitly enable that functionality. I just need my s8 to connect to the same wifi network as the laptop so i can run rekordbox and sync my music libraries. I dont have bband or a router so joining an adhoc wifi connection is the only way it will work.
Any light shed is much appreciated

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