In a statement, HTC said Chang had chose to leave to take a different career path.
On a page dedicated to its investors on Wednesday, HTC made the latest announcement.
Chialin Chang joined the company as CFO back in April 2012.
On the other hand, Chang's position with HTC was no longer as relevant as it used to be.
HTC has also been manufacturing less smartphones in total and over the course of a year ago it made less than 10m units.
HTC hasn't yet quit the smartphone business, as the company is expected to launch the HTC U12, a dual-camera flagship phone for 2018.
HTC has yet to appoint a replacement for Chang and until it does, it's likely that CEO and Chairwoman Cher Wang will take over most of Chang's duties and responsibilities.
As for the smartphone market of HTC, it has not completely ended its business.
Last year's HTC U11 was a great device that we're excited to see a follow-up on, but details on when the HTC U12 will arrive are essentially unknown at this point. Hopefully, the company will find someone who can help HTC revisit its glory days when it was one of the top smartphone manufacturers in the world.
HTC's President of Smartphone and Connected Devices Business, Chialin Chang, has resigned.
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