According to a new report by DigiTimes, Sony is the second manufacturer to use the liquid heat-pipe cooling technology in a smartphone, mainly the recently announced Xperia Z2.
The first company to adopt this technology was the Japanese vendor, NEC, which used heat-pipes in its 4.7-inch Media X06E announced back in 2013. Since then, Samsung and Lenovo were in contact with Taiwan-based thermal module makers to adopt thin heat pipes technology to be used for their products, though both opted not to use them for the time being.
Smartphone heat pipes usually measure 0.6 mm, while PCs measure from 1mm to 2mm in diameter. PCs have better heat-dissipation effects as compared to graphite carbon fiber technology, which is used in most smartphones today.
The Sony Xperia Z2 launch has been delayed until June in Hong Kong and most other markets. The reason behind this delay might be due to these heat pipes as some customers are reporting overheating issues. That might not be the only culprit as other customers are finding a small gap between the front panel of the device and the aluminum frame of the phone.
Customers who purchased the Xperia Z2 in Singapore have been reporting that the phone overheats while recording 4K-video which sometimes causes the camera application to close. In response to this, Sony has released a statement to acknowledge that they are investigating both the overheating and the gap issues.
Sony Mobile Singapore’s official statement on Xperia Z2 overheating issue:
“We are aware of some users encountering issues when shooting 4K video for extended periods. Shooting movies in high quality 4K resolution can make significant demands on your phone’s processor and battery life, as well as phone memory. Therefore for the best experience, we recommend you install a high capacity SD card (Xperia Z2 can take a card up to 128GB) and shoot 4K video in short bursts of no longer than a few minutes at a time.“
Sony Mobile Singapore’s official statement on Xperia Z2 gap issue:
“We are aware of some users’ concern on the waterproofing capability of the Xperia Z2 due to the presence of gap(s) and are currently looking into this issue. In the meantime, users who wish to [sic] may bring their Xperia Z2 to any service center to have our staff conduct a water resistant test.”