The drama surrounding Apple's old iPhone batteries isn't over yet.
Four U.S. House Republicans sent a letter to Apple CEO Tim Cook on Friday asking for answers on batterygate.
SEE ALSO: Apple's latest iPhone battery fiasco is a betrayal inside of a betrayal
In December, Apple admitted to throttling the speed of older iPhones to increase battery performance, a long-time conspiracy theory among iPhone users that turned out to be true. As a result, Apple issued an apology to its customers , and announced reduced pricing for out-of-warranty iPhone battery replacement, from $79 to $29.
But the apology and explanation from the billion dollar company wasn't enough for House Republicans, who want more answers on the subject, according to Reuters .
The report also notes that U.S. Senator John Thune sent a similar letter to Apple on Tuesday. Thune is the chair on the the Senate Commerce Committee.
Cook reportedly made $12.8 million in 2017, according to
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