China's Huawei Technologies, the world's third-biggest smartphone maker, turned in a higher annual profit on record handset sales.

The higher profits came despite the company having to grapple with heightened global scrutiny amid allegations of espionage.  

Huawei, which has risen quickly to become a dominant player in the smartphone industry, saw its consumer business sales hit a record 348.9 billion yuan ($52 billion) in 2018.

The increase was driven by its premium device models such as the P series and Mate series. 

This was in line with what the company flagged in January, when it also said it could become the world's biggest-selling smartphone vendor this year. 

But the outlook for Huawei is clouded by US accusations that its telecoms network equipment could be used for spying by the Chinese government and calls to allies from Washington to ban Huawei from building next-generation mobile networks. 

Huawei has repeatedly said Beijing has no influence over it. 

The latest blow came yesterday when Britain rebuked Huawei for failing to fix long-standing security flaws in its mobile network equipment and revealed new "significant technical issues". 

The Chinese tech giant today reported a net profit of 59.3 billion yuan for 2018, up 25% from a year ago, but slightly slower than a 28% rise in 2017. 

Global revenue for the Shenzhen-based firm climbed 19.5%, surpassing $100 billion for the first time to hit 721.2 billion yuan ($107 billion) last year and marking its fastest pace of business growth in two years. 

Huawei, unlike other big Chinese technology firms, derives half its revenue from overseas. 

"The easiest way to bring down a fortress is to attack it from within. And the easiest way to reinforce it is from outside," rotating Chairman Guo Ping said at a press briefing attended by over 100 journalists, way more than in past years. 

"Moving forward, we will do everything we can to shake off outside distractions, improve management and make progress towards our strategic goals," he told reporters. 

Huawei has launched an unprecedented media blitz in recent months, opening up its campus to news groups and parading its typically low-key founder, Ren Zhengfei, in front of global media, as it fights US concerns over its network gear.

Huawei's consumer business, which includes smartphone operations, grew 45% last year after shipping 206 million smartphones. The segment grew about 32% a year earlier. 

Revenue from its carrier business group reached 294 billion yuan, roughly in line with the previous year. 

A top company executive said earlier this week that the US campaign against Huawei was having little impact on its sales and that it was unlikely many countries would heed the US call to ban its gear. 

He said revenue is expected to jump to $125 billion in 2019, adding that future growth will come "primarily" from smartphones and enterprise services, with sales of equipment to telecom carriers growing at single digit rates.