Mobile phone commercially available handheld mobile phone. From 1983 to 2014, worldwide mobile phone subscriptions grew to over seven billion—enough to provide one for every person on Earth. In first quarter of 2016, the top smartphone developers worldwide were Samsung, Apple, and Huawei, with smartphone sales represented 78 percent of total mobile phone sales. For feature phones (or "dumbphones") , the largest were Samsung, Nokia, and Alcatel. A handheld mobile radio telephone service was envisioned in the early stages of radio engineering. In 1917, Finnish inventor Eric Tigerstedt filed a patent for a "pocket-size folding telephone with a very thin carbon microphone".
Firefly (mobile phone) the call by pressing the green key. Entering letters and numbers is accomplished by selecting each character and then confirming it, which moves the cursor to the next blank space – this can also be done easily via the website. The handset also contains animations, different colours and internal ringtones to entertain the child. There are five main keys on the phone, along with several more secondary button: Firefly (mobile phone) Firefly is a cellphone aimed at parents to give to their children aged 5–12 years. The address book button has up to 48 phone numbers in it. These are