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In light of recent events concerning the freedom of internet, thoughts are going in the direction of breaking free from the control of wired internet service providers. One widely discussed option is WiFi router based network, but its range is quite limited. Cell phones have a much greater range though, and everybody has one.
Legalities aside (laws can be changed, after all) is it possible to reprogram existing cell phones mobile network modules to ultimately create a wireless internet on the mobile frequencies? Or is there a fundamental component missing for two-way communication between two cell phones?