How to Make Smartphone With Touchscreen

After the tutorial How to make a simple phone Arduino Simple Phone for Education : 10 Steps (with Pictures) - Instructables

Thanks to Instructable for giving me the second prize :v

Today we continue to build a touch-sensitive smartphone

Inspired by the iPhone 4, the phone that is said to have opened the Smartphone era of the Apple empire.

Overview: this is a relatively complex project, but not too difficult, you need a lot of knowledge about hardware, programming and interface design. I think the interface part will take the most time.

Preparation:

1. Arduino Mega 2560
2. Nextion screen
3. Sim module
4. Fingerprint sensor
5. Other essential electronic components

For me, the Nextion screen is great and easy to design, with a lot of support, but it is quite expensive. There is a Chinese copy version, with a cheaper price, it can probably be used. It also supports software for programming and simulation like the original.

Searching skills with Google are also very important, if there is any difficulty, search for that keyword and try to find the results, I believe we will solve it

Speaking of the Nextion screen, it is really easy to program and communicate with the microcontroller

I have referred to the control method from this Youtuber, thank him very much: https://youtu.be/fjtdWQdrKaE?si=fyTnAQJhw2kWVKZ_

Regarding the interface, I used Canva to design the screen, the icons were downloaded for free on the internet. I was mostly inspired by the iPhone, I'm sure he won't copyright me =))

After the hardware design and software programming steps, we finally have a complete version that can make calls. Some "apps" that I simulated using images :v

Designing a neat circuit is necessary to fit everything into a compact phone, I love PCBs so I won't design a case for it, I think it's a pretty cool design

All download files i will upload to my Github, follow the link below: Github

Sorry for not giving really detailed instructions, this is a challenge for me because i don't have much time

Future product development orientation:

1. It is not a true smartphone because it does not have an operating system
2. It is possible to add an ESP32 module to connect to the internet
3. It is possible to add a memory card and a camera module to have the function of taking photos and recording videos like on smartphones