Mobile phone batteries, no matter how good they get, are still the Achilles heel of any phone. That is, except for a mobile phone prototype created by researchers at the University of Washington, built to work on an unimaginably small amount of power.
The super-efficient phone doesn't so much sip power as breathe it in from the air around it. It asks for just 3.5µW of power. That's microwatts, kids. The device gets its power from a base station 31 feet away via RF signals. A tiny photodiode can pull in ambient light to extend that range to 50 feet. The phone connects to that base station which makes a call via Skype and communicates via zero-power amplitude modulation.
It ain't pretty
What they have here is a very basic prototype. Don't expect to see it on shelves next year or anything like that. The prototype is built with off-the-shelf parts and, for now, is just a basic circuitboard that transmits some very low-quality audio. It's a far cry from the mostly-crystal-clear audio we're used to.
But with that said, the potential of this is huge. Battery free cellphones could allow a whole village in a remote area to communicate with just one base station and no need to recharge. As audio compression gets better and researchers and manufacturers optimize the components, something like this could become truly viable.
The Galaxy S20 Ultra's Space Zoom camera is amazing and a bit creepy
The Galaxy S20 Ultra supports up to 100X zoom, which Samsung calls Space Zoom, but is it any good? Can a phone really product usable photos at 100x zoom? We've got our Galaxy S20 Ultra already so join us to find out!
Win an iPhone, iPad and Apple Watch with the Reader's Choice giveaway!
What's the best phone of 2019? Is it the iPhone 11 Pro, Pixel 4 or OnePlus 7T? What about the best laptop, games console, tablet and more? Vote NOW in the Reader's Choice awards and win BIG in time for the holidays!
Here are the best products from IFA 2019!
Here are the products announced at IFA 2019 that were worthy of our Best of IFA 2019 awards. Also featuring MrMobile's single best product at the show!
Get cozy with the best throw pillows
Throw pillows are a fabulous way to refresh a room's decor without breaking the bank. They can add a splash of color, or a touch of designer chic to a shabby couch, or be used to make your bed look more inviting. If you're looking to invest in some new cushions, we've found 12 desirable designs to suit all types of decor.