It was a hell of a long-distance call.
The research team also manufactured a new type of sensor and incorporated it in a phone case.
It harvests energy from the ambient light and is super efficient.
It’s another fantastic discovery inspired by nature.
With mobile phones, you can easily contact anyone even if it is an overseas or local call. When you cannot contact a person because he or she forgot to bring his or her phone, you can send him or her text messages. Aside from communication, the mobile phone also has features that help you during the day such as an