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Emma Walsh here, managing editor of the Journal. Routine Diary readers understand that tech isn't our typical beat. And when it comes to tech investing, we leave it to the professionals. The good news is, we have a number of such professionals in our Rolodex. Our colleague Jeff Brown will be familiar to our long time readers.
In fact, he had several triple-digit returns in his Brownstone Research study portfolios in 2015. Here's what Jeff believes the tech sector will bring us in 2021 Each year, I like to take an appearance at the huge photo and anticipate what's just around the corner. Long time readers of my work know that I follow the most interesting tech patterns on the edge of mass adoption.
These trends are experiencing rapid development and producing unbelievable opportunities for investors. I want to make sure all our readers are gotten ready for what's next. And with that in mind, let me draw the picture of what I see being available in the next 12 months 1. 5G Devices Our new 5G (fifth-generation) wireless networks are a subject I have actually been covering for years now.
Despite the fact that the COVID-19 pandemic interrupted supply chains last year, an excellent 250 million 5G-enabled gadgets were still offered. Especially in the second quarter, there were supply chain disturbances, manufacturing delays, and work blockages. And all of this eventually resulted in Apple postponing the release of the 5G-enabled i, Phone 12 by two months.
When you consider all of that, selling 250 million units is impressive. More significantly, the hold-ups triggered by the pandemic developed a lots of suppressed demand. Which need is now going to be pushed into 2021. In reality, I forecast that more than 500 million 5G gadgets will be delivered in 2021.
Phase 3 of 5G When I've discussed 5G in the past, I have actually described its 3 different phases. In Stage One, the infrastructure of these new networks is developed out, including all the brand-new towers and fiber-optic circuitry that 5G will require. In Stage Two, 5G gadgets go on sale.
And in Stage 3, 5G services begin to be used. That's when we begin to see applications running on 5G networks. Consider things like enormous multiplayer video games over a cellphone. That's not possible with 4G. It will be with 5G. And my 2nd 5G prediction for 2021 is that we will begin Stage Three by this summer.
More and more consumers will go out to buy a 5G phone to access these applications. 5G is going to open up a suite of incredible applications: self-driving vehicles, the Internet of Things, robotic surgery, and more.
The investment chances going forward will be enormous. CRISPR Genetic Modifying Stepping away from 5G, the next essential technology I visualize in 2021 is CRISPR hereditary modifying. It's one of the most interesting advancements in biotechnology.