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Smartphone's operating system is either closed of modification like IOS, or it occupies a large amount of RAM and has many deficiencies like Android, besides bad features like lack of security and high cost. The objectives of design are to achieve a Smartphone with flexible software, obtain an adaptive hardware, increase the battery life, manage the capacity, increase the level of security, minimize the cost, enhance the functionalities of the Smartphone by adding IOT features, and provide open options of accessories for the user such as the screen, touch pen, keyboard, mouse, and battery. The smart cellular phone is designed, collected, and programmed. The hardware consists of raspberry pi, GSM module (Pi-talk shield), touch screen, memory card, and power supply. The raspberry pi plays the role of data processing and performing the code besides storing data in memory card which is attached to raspberry. The GSM module plays the role of receiving and sending calls and text messages. The operating system used is NOOBs. The code is written with python which is a strong, simple, and flexible language. The phone can be connected to internet using the WIFI terminal in raspberry pi and can have many IOT applications. The overall system is composed by connecting the female pins of Pi-talk shield to the GPIO pins of Raspberry Pi which forms the interface between the two devices through which the data is exchanged between Raspberry Pi and Pi-talk shield according to the Python code. The display screen is connected to the Raspberry Pi via the HDMI terminal. The Pi camera is attached to the Raspberry Pi via a specific terminal for the Pi cam. The software is built and implemented. The performance of the built Mobile phone is tested in most common operations such as voice calls, SMS, and internet browsing, and the results proved a good operation and reliability. The device deserves making extra improving efforts.
Abdelrahim et al. (Fri,) studied this question.