The HTC One M8 and Desire smartphones have helped HTC avoid a second cruel summer of losses.
Apple's operating system accounted for 50 percent of all US activations in the fourth quarter, inching out Android's 45 percent share.
Boosted by hot iPhone sales, the company tops the $15.9 billion earned by ExxonMobil in the second quarter of 2012, says Standard & Poor's.
A check of US phone users by Consumer Intelligence Research Partners found that iPhones accounted for half of all activations.
If Morgan Stanley's prediction of 69 million iPhone shipments is accurate, the figure would far surpass the 51 million iPhones that Apple actually moved during the final quarter of 2013.
The company expects a pretax loss due to changes in pension and post-employment plans and abandonment of certain copper assets.
Decline in quarter would mark fifth consecutive quarterly drop for the world's largest maker of smartphones.
After several quarters of losses, BlackBerry finally ekes out a small profit. But sales remain weak for the once-mighty smartphone maker.
But sales will sink to under 50 million in the first quarter of next year, forecasts KGI analyst Ming-Chi Kuo.
World's largest maker of personal computers reports second-quarter net profit of $262.1 million, an increase of 19 percent from the year-ago period.