Bangalore: Worldwide information technology (IT) spending is set to increase 4.1% to touch $3.8 trillion in 2013, driven by spending from the telecom services market and increased discretionary spending in North America, according to a forecast by technology research firm Gartner Inc.

In constant dollar terms, spending will increase by 4%.

In January, Gartner had forecast that global IT spending would increase 4.2% to $3.7 trillion.

Gartner said the global telecom services market would continue to be the biggest IT spending market, but growth would remain flat over the next few years.

Worldwide spending on devices such as personal computers, mobile phones and tablets is expected to reach $718 billion this year, an increase of about 8% from last year, according to the report.

“Consumers and enterprises will continue to purchase a mix of IT products and services; nothing is going away completely. However, the ratio of this mix is changing dramatically and there are clear winners and losers over the next three to five years, as we see more of a transition from PCs to mobile phones, from servers to storage, from licensed software to cloud, or the shift in voice and data connections from fixed to mobile," said John Lovelock, research vice president at Gartner.

Spending on enterprise software will rise by 6.4% to $297 billion, while the forecast for IT services remains unchanged from the previous quarter, mainly due to increased competition and pressure on pricing among service providers.