3G - some days yes, some days no

[dr4sight]

Hi,
My phone is the Optimus V. I work two days each week at a large stand-alone retail store which has no wireless in the store.
For some reason 3G works some days but not others. One would think that it might be tied in to weather and atmospheric conditions but I've had seemingly identical days where I have connectivity on some of them and nothing on others.
Can anyone explain why that is?
Thanks.

 

[UnixPimp]

Lack of Sprint cell towers in your area?

Check out this Sprint page to find the network coveragte and planned updates in your area:

https://network.sprint.com/

 

[dr4sight]

That's an interesting page and encouragingly reports that upgrades are expected near where the store is located.
It still doesn't help me understand why on two different clear days I can have 3G connectivity on one of the days and not on the other.
Thanks, though.