Newsflash.
ALL Cellphones, even dumbphones are affected by signal strength, the weaker the signal, the phone has to boost power to the radio to maintain a connection.
Turn on Airplane mode on pretty much any dumb or smart phone, you'd be amazed how long the battery lasts without having to power the radio, I did that with my old Samsung Replenish Android Phone after I got my S3, I think with airplane mode on, it lasted almost a week before it died, my old 3GS would go almost a week to.
In other news, the pope is catholic.
Thank you for posting this. Saved me time chiming in. I read the article and thought No S@#$T Sherlock