1. Nirvi's Avatar
    I'm still new to Windows Phone. I recently downloaded Skype on my Nokia 521 prepaid with T-Mobile. Skype works fine when connected on WiFi but just fails to make calls when connected to 4g. Is anyone else having this issue?
    08-07-2013 04:48 PM
  2. Laura Knotek's Avatar
    Are you also using WiFi calling? Have you tried disabling WiFi calling for regular calls and then see if Skype works with WiFi?
    08-07-2013 06:38 PM
  3. Nirvi's Avatar
    I've had WiFi calling off all along. When I try to make a call using Skype over 4g it just shows the number & says "calling" but never actually does anything. I have tried it when I'm connected on WiFi & it calls the number without a problem. Any ideas?
    08-07-2013 07:07 PM
  4. Nirvi's Avatar
    I have a feeling T-Mobile is blocking ports. Shame...
    08-08-2013 10:21 PM
  5. associatedpress's Avatar
    I have a feeling T-Mobile is blocking ports. Shame...
    I have a Lumia 925 on T-Mobile prepaid and Skype works well on and off WiFi for me. I would suggest downloading and running the speedtest.net app as "4G" speeds fluctuate a lot. At least for me, when I'm not on LTE, 4G bars don't reflect well with speeds actually obtained. That could be a big factor for VoIP success. Any other VoIP apps you can try other than Skype on 4G such as viber?
    08-09-2013 01:08 PM
  6. Nirvi's Avatar
    Yea that could be it. I'll give Viber a try to see.
    08-09-2013 05:18 PM

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