03-25-2017 04:34 PM
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  1. Joe920's Avatar
    Do we know for sure that the problem is the GoPhone plan? I have a GoPhone plan and a Lumia 950 XL and have no issues using mobile hotspot.
    It seems like a combination of the phone and the plan. If you can change some settings on the phone and make it work (see a few posts up) then it seems Win10 related.

    This also fits my story: when I use my 950XL for tethering, the GoPhone / AT&T backend sends a message "looks like you're trying to use data, but your plan doesn't have data" or something like that. Now after having an iPhone on their network (same SIM and account that didn't work before) for a few weeks I can tether my iPad to my iPhone. This didn't work for more than a year. So something about the combination of 950XL and GoPhone is to blame.

    The fact that this took weeks to correct itself also sound like some provisioning issue. I recall reading that you could fool AT&T's system into thinking that you have a different model phone by giving them the IMEI of a different phone model, but that the system would poll your phone for the IMEI at some point (days or weeks later). So my hunch is that AT&T's system reads device info (name, model, system settings?) and decides that tethering is not allowed or not possible.
    03-02-2017 08:07 AM
  2. raiderfan247365's Avatar
    It seems like a combination of the phone and the plan. If you can change some settings on the phone and make it work (see a few posts up) then it seems Win10 related.

    This also fits my story: when I use my 950XL for tethering, the GoPhone / AT&T backend sends a message "looks like you're trying to use data, but your plan doesn't have data" or something like that. Now after having an iPhone on their network (same SIM and account that didn't work before) for a few weeks I can tether my iPad to my iPhone. This didn't work for more than a year. So something about the combination of 950XL and GoPhone is to blame.

    The fact that this took weeks to correct itself also sound like some provisioning issue. I recall reading that you could fool AT&T's system into thinking that you have a different model phone by giving them the IMEI of a different phone model, but that the system would poll your phone for the IMEI at some point (days or weeks later). So my hunch is that AT&T's system reads device info (name, model, system settings?) and decides that tethering is not allowed or not possible.
    Right, but I have a 950 XL on a GoPhone plan and have no issues tethering, I'm just thinking it's more complicated than simply 950 XL + GoPhone plan. I have the international unlocked single sim version fyi.
    HoosierDaddy likes this.
    03-02-2017 05:52 PM
  3. juanitoriv's Avatar
    Okay I figured out how to enable it on GoPhone.

    1. Download the latest Interop Tools for Windows 10 Mobile. Find it in Settings > Extras.
    2. Open registry browser, go to: HKEY_LOCAL_MACHINE\System\ControlSet001\Services\ICSSVC\Settings
    3. Set EntitlementRequired to 0
    4. Clear DedicatedConnections (Remove any strings in it and save).
    5. Reboot your phone.
    6. It works
    Do you know if this works on Cricket as well?

    Edit: The Registry Hack enables Hotspot on my L640 without having a qualifying plan on Cricket
    Last edited by juanitoriv; 03-07-2017 at 08:29 AM.
    03-07-2017 08:09 AM
  4. JimLewis's Avatar
    I have an unlocked Lumia 950 XL Dual SIM that I bought from Microsoft. I have the $45/mo AT&T GoPhone plan that now comes with 6 Gb data/mo and includes Mobile Hotspot functionality. Could not get Hotspot to work until I did the following. I have my prepaid GoPhone SIM in one slot, my old postpaid, inactive AT&T SIM in the other slot. With cellular & cellular data turned on, I went to Settings, Network & Wireless, Cellular & SIM. There, with both SIM's turned ON, from the dropdown, "Use this SIM for cellular data," I deliberately picked the slot with the INACTIVE SIM card (don't know if it works without any card in the slot). Wait at least several seconds until the banned or inactive symbol shows under that SIM heading. Then switch the dropdown for "Use this SIM for cellular data" back to the active SIM card. It may take 10 to 20 seconds to connect to a cell tower again. But after I did that, my 950 XL Mobile Hotspot functionality worked, usually repeatedly without a problem. If the Mobile Hotspot stops working, I simply repeat the procedure (alternatively, a reboot worked, too). At least in the middle of the night, probably without much other traffic, I get excellent speed by Ookla Speedtest: 29 ms PING, 34.65 Mbps down, 3.90 Mbps up with only 3 bars AT&T LTE connection tested via an old Gateway NV59 laptop hooked up to 950 XL. I have found the same switching of cellular data between active and inactive SIM slots to promote my 950 XL connecting to my AT&T 3G microcell, presumably because the phone normally prefers an LTE connection and there is no switch on the phone to turn off LTE (unlike an iPhone 6, for example). So switching SIM slots back and forth right next to the microcell allows the phone to connect, as well.
    Last edited by JimLewis; 03-25-2017 at 06:02 PM. Reason: add rebooting alternative
    03-25-2017 04:34 PM
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