At a time when much smartphone development has been about refinement rather than evolution, notable progress has been made with charging. It has become quicker to charge devices, meaning that low batteries are now not as much of a problem as they once were.
But whilst charging times have been reduced, support for wireless charging has gone backwards. LG, for example, had previously championed the technology, yet wireless charging is missing from its 2016 flagship, the LG G5.
Although manufacturers have argued that wireless charging is less necessary thanks to improved charge times, many users miss the convenience that it offers. And the reason support for wireless charging is now less widespread actually relates to modern smartphone design.
The use of premium materials in smartphone design is commonplace in 2016. But this presents a problem, as metal phones such as the LG G5 have not been able to support wireless charging.
Now LG have reportedly completed development of a magnetic resonance wireless charging system. This works differently than magnetic induction charging, in that LG’s system functions without the device been directly placed on the charger, with distances of up to 7 cm supported.
One of the biggest advantages of magnetic resonance wireless charging is the potential to support metal phones. Whilst it is not clear whether this will be offered by LG’s system, just under a year ago Qualcomm announced that its WiPower magnetic resonance wireless charging technology was able to charge metal devices.
Magnetic resonance wireless charging is not new, however. The technology is used to charge electric toothbrushes, and also enabled the Palm Pre, released in 2009, to support wireless charging.