I have had zero luck in using a MJ over any WiFi connection whether it was the 4G LTE that I used to have with Millenicom or any park WiFi even when the park WiFi was fast. It worked when on the Frontier land line DSL connection but has never worked on WiFi. I gave up on MJ while traveling and bought the Straight Talk home phone system. $15/month plus tax and I think the hardware was $90. It operates on the Verizon network and I just let it expire when I get back home. The only problem is that it will reassign a different number when it is reactivated when I go south for the winter.