Sprint’s 4G experience has been nothing to write home about for a number of their customers, who are increasingly disabling the service to save on battery life.

Speed tests of Sprint’s 4G WiMAX experience show increasingly unimpressive results, as the network grows exponentially more crowded with customers trying to capitalize on the higher speeds 4G is supposed to deliver.  The result?  BTIG Research in April found, after exhaustive testing, the average Sprint 4G customer was now getting around 1/1Mbps service from a network that promised to deliver speeds many times that.

This isn't even a contest. (Source: BTIG Research)

Now an increasing number of customers are simply switching the 4G service off completely to extend battery life.

Doug Mahoney, a contributing editor for TechZone360, says he has about given up on WiMAX:

WiMAX tends to stay turned off so I run 3G and there’s no big differences in the convenience of reading email or using simple apps like Twitter and Foursquare.  With more public places starting to offer free WiFi, the case for WiMAX — or LTE — on a smart phone starts to grow weaker between the extra cost and the battery life issue.

Mahoney complains Sprint’s 4G network is simply not robust enough to support consistent speeds and access.  In suburban Washington, he compares Sprint’s 4G coverage to an open air tree, with spotty service scattered across the region.  As a result, his 4G phone spends a lot of time desperately-seeking-signal — a process that accelerates battery depletion.

Given Sprint’s WiMAX “tax” of an additional $10 a month for the service, Mahoney isn’t so certain he’d pay it again on a future Sprint phone.

Are the same speed reductions in store on Verizon’s currently-lightning-fast LTE 4G network few customers use right now?  Perhaps, but Verizon’s brand may force the company to make sure coverage is much stronger than what Sprint customers currently tolerate:

LTE has the same power consumption issues as WiMAX. I suspect Verizon will have better, more ubiquitous LTE coverage just due to the characteristics of the 700 MHz spectrum and physics involved, so I should have faster broadband available in more places rather than the abstract green tree coverage map.