The PC and tablet market is estimated to decline 1.2% in 2018, while the mobile phone market is on pace to record an increase of 1.4%.
PC shipments totalled 71.6 million units in the fourth quarter of 2017.
Global PC shipments decrease for 11th straight quarter but worldwide IT spending is forecast to grow 2.4% in 2017.
For the first time since 2007, quarterly PC shipments were below 63 million units.
Shipments for the Asia Pacific PC market reached 26 million units in the fourth quarter of 2015, a 1.5% decline from the fourth quarter of 2014.
Worldwide personal computer shipments totalled 83.7 million units in the fourth quarter of 2014, a 1% increase from the fourth quarter of 2013, according to preliminary results by Gartner Inc.
After eight quarters of declining shipments, worldwide PC shipments experienced flat growth in the second quarter of 2014, according to preliminary results by Gartner Inc.