Megafon 3g modem and zero download speed

With such questions better to contact the TP Megaphone

It may sound silly, but are you sure that the balance is positive?

What city? Do not guess, you must contact the TA, nothing wrong with that, and the reasons can be varied. Make some tests when the problem is reproduced, record the exact time and will notify all these data (phone number and APN they have dogadatsa record)

first try to open any website through the browser.
sometimes flips to the page of the company where you have to press "start Internet" or something like that.
this was on bags "on the Internet.Start" (first entry) and unlimited.

And the modem in what mode works? Try to force it to 2G switch.
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I have observed similar behavior megafonovsky modem in the country, when there appeared a 3G network, but has not yet functioned as expected.