Qualcomm Q4 auto and IoT gains offset 56% of handset revenue decline
Qualcomm's automotive and IoT businesses cushioned lower handset sales. The chip segment still reported less revenue and a lower pretax margin.
Qualcomm's diversification showed up in actual quarterly sales, but it did not fully cover the decline in handsets. That is a useful distinction for investors weighing the chipmaker's ambitions beyond phones: new revenue sources are contributing, while the existing business still sets a large hurdle.
The company, listed on Nasdaq as QCOM, reported fiscal fourth-quarter results in its November 4 release. For the quarter ended September 27, 2026, its QCT chip business recorded handset revenue of $5.137 billion, against $6.961 billion a year earlier.
Measure the offset in dollars
Automotive revenue rose from $1.053 billion to $1.990 billion. Internet-of-things revenue increased from $1.807 billion to $1.888 billion.
TrendyVest's calculation puts the handset decline at $1.824 billion. The automotive and IoT gains total $1.018 billion, covering about 56% of that decline. The remaining $806 million matches QCT's revenue decrease, from $9.821 billion to $9.015 billion.
This is a revenue comparison, not a profit attribution. QCT's reported earnings-before-tax margin fell to 24% from 29%. The release does not give a separate profit figure for each of those three revenue streams, so their sales growth alone cannot establish which business drove the margin change.
Management also reiterated a $5 billion fiscal 2027 data-center revenue target. That belongs in the outlook, separate from the sales already reported. The fourth-quarter stream table does not identify a standalone data-center amount.
The next check is whether revenue beyond handsets continues to grow fast enough to cover any further phone weakness, and whether QCT's pretax margin improves alongside that mix. The dollar offset makes the progress visible without treating diversification as complete. Future targets may expand the opportunity, but they have to become reported sales before they can close an actual quarterly gap.