The AGPS would likely be a time assistance. You could conceivably navigate with three satellites given you have a decent estimate of time from the cellular network.
For all those worried about data, FYI, I have a 1GB per month plan that costs $65 a month I think, I barely go NEAR that amount of data, but I don't find a need for data all the time.
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Who is in charge of this product and why haven't they been fired yet?
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