$Apple (AAPL.US)$ Juniper Research estimates that demand for...

Juniper Research estimates that demand for 5G smartphones is going to grow rapidly in the coming years as more consumers upgrade to the latest wireless standard to take advantage of faster speeds. The firm estimates that 5G smartphone revenue could more than triple to $337 billion in 2025 from this year's estimated $108 billion.

At the same time, 5G infrastructure investments will take off as more countries around the world get access to the new wireless standard. Mordor Intelligence forecasts that the 5G infrastructure market could clock a compound annual growth rate of 53% through 2026, hitting nearly $54 billion in revenue in five years. Investors can take advantage of these fast-growing tech trends by buying shares of Ciena (NYSE:CIEN) and Apple (NASDAQ:AAPL).