David Cogen

David opened a cell phone store on his college campus and started TheUnlockr.com as a personal tech blog back in 2009 along side. He gets an unnatural excitement out of showing others new things about their tech that they might not have known. Reach out to him on the following social networks and say hi.

Huawei P40 Pro Plus Real-World Test (Camera & Battery Test)

I take the Huawei P40 Pro Plus phone for a spin through a full day using it to test the battery and do a camera comparison with the Pro Plus and other top flagships out right now. Let’s see how it does. Hope you guys enjoyed the video! Let me […]

Why 8K is NOT Pointless

There is no shortage of people out there talking about how dumb 8K is. And, honestly, having seen 8K TVs next to 4K ones many, many times, I can tell you there is a difference. Frankly, they’re using measurements and charts that don’t show the entire picture and after going

Why This Was One of the Most Important Phones in History

You might not know it but that is the sound of one of the most important, albeit underrated, phones in history. In this Decodr episode, my explainer series here on the channel, let me explain what I mean. This is the Sidekick 3, the third generation of the iconic device

Sony ZV1 Complete Walkthrough: The Best Vlogging Camera

Sony just released a new compact camera called the Sony ZV-1 and since they let me borrow one for review, I figured I’d do a complete walkthrough on it for you guys. Now, if you aren’t familiar, a complete walkthrough on this channel is where I try and go through

Razer Blade 15 2020 Complete Walkthrough: They Finally Fixed It

Razer updates their laptops a lot honestly. Usually, it’s a new processor or a new display and some other minor bump in specs but this time, oh, this time, it feels like they took all of the criticisms myself and others have been giving their lineup and went, “OK. We’ll

What is LiDAR? (& Why is It on Apple Devices All of a Sudden)

If you’ve seen some of Apple’s new commercials around the iPad Pro, you’ve undoubtedly seen them touting their new LiDAR sensor on it and maybe you wondered, just for a sec: what is LiDAR? Well, in this Decodr episode, my explainer series here on the channel, let’s talk about this

Microsoft Surface Book 3 Complete Walkthrough: A Lot More Powerful

It has been over 2 and a half years since the last update to the Surface Book lineup happened and finally after waiting for this long, we now have a new version of Microsoft’s top of the line laptop (or 2-1 one technically). For now, Microsoft sent me a Surface

Camera Comparison: TCL 10 Pro vs iPhone SE vs Pixel 3a

The TCL 10 Pro is undoubtedly a pretty phone (and even more so considering the fact it’s $450). The question on everyone’s mind though is whether the camera is any good though? Well, in a potentially unfair shoot out, here are arguably the two top camera phones under $450: the

How to Use Your iPad as a Second Monitor (Windows & Mac)

I have another tip and trick video for you guys. This one is for anyone who owns an iPad and who might have thought about getting a second portable monitor for their computer to help them be more productive. Instead of buying that second monitor, you can easily turn the

DJI Mavic Air 2 Complete Walkthrough: Their Smartest Drone Ever

DJI just announced the sequel to their popular Mavic Air drone, the aptly named Mavic Air 2. I was sent one by DJI to borrow for a bit and so figured I’d try and do a complete walkthrough on it for you guys. If you’re not familiar, a complete walkthrough