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Mobile hotspot issues

By Mencil
Jul 3, 2013
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  1. Hi guys.
    Recently I've been having trouble connecting to my mobile phones WiFi hotspot with my laptop.
    I can connect to the hotspot with any other device, such as the tablet I'm using now, and I can also connect to any other WiFi using my laptop. The problem appears to exist purely between my laptop and my phone.
    When attempting to connect it will begin authenticating and then disconnect, offering me the troubleshooter. Sometimes there is a small volume of packet transfer but not often. I have tried disabling and reenabling all of my network adaptors to no avail and I'm somewhat at a loss of what to do next.
    The phone in question is a Motorola razr I if that helps, but I have to point out that it worked flawlessly until recently.
    I suspect the culprit may be hamachi as it had very recently been installed onto my computer at the time and it appears to be a known trouble maker.
    But I still don't understand why no other problems have arisen. Hamachi has been uninstalled but the problem persists.
    Any suggestions or ideas that could help would be greatly appreciated.
    Thanks for your time guys.
    Mencil
     
  2. jobeard

    jobeard TS Ambassador Posts: 13,446   +324

    What OS is on the Laptop and which Firewall are you using?

    huh? Connecting how: Bluetooth, Infra Red? The WiFi adaptors of both the phone and the laptop are never going to connect, unless you're attempting peer-to-peer which has limited utility.

    If you're connecting via a router, then the PC is not the issue.
     
  3. Mencil

    Mencil TS Rookie Topic Starter

    The laptop is has a Windows 7 OS and the Firewall is just windows firewall.
    I'm using the laptops wifi ability to connect to the phone, which is able to generate a wifi hotspot, in a sense turning itself into a router I guess. I'm using a work around by USB tethering the phone to the laptop which seems to work just as well, as my laptop now has internet and I'm using it to type this message.
    I would still like to know what the problem is though, and whether it can be fixed.
    As I said, they've worked together flawlessly for month and only recently have they developed a problem.
    If it is the phone that's the issue, since it's behaving like a router, could that be fixed without sending it to a shop? As I said it's working with other devices, just not the laptops wifi.
     
  4. jobeard

    jobeard TS Ambassador Posts: 13,446   +324

    Hotspots are normally accessed using the PC wifi adaptor, eg
    PC - - wifi - - Hotspot​
    but you are first attempting
    Cell Phone - - tethered to - - PC​
    and that would allow
    Cell Phone Tower -- Cell Phone -- tethered to - - PC​

    So, I can only guess you are attempting to get
    Cell Phone Tower -- Cell Phone -- tethered to - - PC --wifi-- Hotspot​

    Personally, that's contradictory (cell access == wifi-hotspot access), but more seriously, whichever connection is created first, it will dominate the other (ie starve it from sending/receiving anything).

    This is due to the routing table being created with the default route going to the gateway of the first connection.

    I would anticipate that the order in which the connections are made would have an impact.
    1. Wifi First would be the easiest and create the default route via the hotspot.
    2. Cell tethering might then succeed in making the connection, but have no traffic. (recall that this connection is created from the cell phone itself.)
    now reverse that sequence and
    1. Cell phone tethering succeeds and your pc gets traffic just fine
    2. but attempt the wifi connection and it will fail due to the existing routing table forcing traffic out to the cell phone instead of the hotspot.
     
  5. Mencil

    Mencil TS Rookie Topic Starter

    I'm using my phone to connect to the internet via 3G using its mobile Internet.
    The USB tethering I mentioned is something I have only done in order to get around the lack of wifi. In other words, as long as the wifi worked I never used it. So I don't think the conflict you described could be the problem since I never used them at the same time and the wifi connection ceased working a while before I started trying the tethering.
    As I said, it worked fine until recently but now my laptop, and only my laptop, is unable to connect to the wifi. I'm just trying to find out why.
     
  6. jobeard

    jobeard TS Ambassador Posts: 13,446   +324

    Ok you're not tethering at the time of the wifi problem.
    then that was sure misleading.

    " I can also connect to any other WiFi using my laptop" so WiFi is not an issue at a hotspot.

    "exist purely between my laptop and my phone" so your problem is Tethering and has nothing to do with hotspots.

    "The phone in question is a Motorola raz" did you double check the settings on the phone?
     
  7. tipstir

    tipstir TS Ambassador Posts: 4,683   +86

    I have the Motorola Razz Max and had to use it as hot spot last month when the power was lost for more than 8 hours. Depending on how your phone was setup you have to change the default SSID and passcode. Then you can use the cell phone 3G or 4G LTE for me as WiFi hotpot. Once that enabled on the phone then you can use it. The laptop will see the SSID then you connect with passcode that should connect. Might have to give it a chance too. Reboot the cell phone if you have issues.
     


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