The testing of this Beta GoToMyPC build is not complete, and unfortunately was unsuccessful. As soon as we have a new option available for testing, we'll update the community here with more information.
I'm sorry the issue still persists.
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I know this is an old thread - and I am in the UK not USA, but I have had the same problem for months with access to GoToMyPc via 4G on my IPhone on the vodafone UK network. Logmein/ GotomyPC support seem unaware that this is a known problem and keep giving me "maintenance / housekeeping fixes that do not address the problem. Can anyone provide a definitive answer to this?
Do you have any issues when you connect your iphone to wifi? I am not aware of any issues with Vodafone specifically but I will check with the rest of our support team.