Touchscreen not working, is there a reason why?

You need to install the touchscreen driver from here: http://www.lcdwiki.com/4inch_HDMI_Display-C Scroll down to "How to use Raspbian/Ubuntu Mate/Kali/Retropie system"

When i first used the pi 4 screen, i connected the raspberry pie. raspberry pi 4 touchscreen flickered and didn't display. what should i do?

Make sure you read the instructions about the screen as it is not fully plug and play. It will flicker on and off a few times while being detected and there is a driver you will need to install to rotate the screen and set the resolution but it is all in the setup guide. If you did not get a setup guide, go to the website for the manufacturer and download it from there. Just be aware, this id a DIY device and setting this up may impact usability of other default monitors like it has for me.

Can I install drivers alone on my RasPi4b build without a complete new image - if so where is link?

Seller gave me instructions to install driver on an existing image within 2 hours of my email. Amazon rejects my reviews and replies if I try to post them. Be aware that there is no way to REMOVE the driver without installing a new image, also verified by seller who states they’re working on an uninstall.

I am looking at using this as a portable unit, with no power cord and battery use only. What battery would be recommended?

Miuzei raspberry pi 4-inch touchscreen power consumption is 5V 0.16A. It's recommended to use a lithium battery as power storage(NOTE: conversion between power storage and release )

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🔥 Elevate your Raspberry Pi game with touchscreen power and pro-grade cooling! 🖱️

SMOOTH 60 FPS VISUALS - Enjoy lag-free HDMI input with up to 60 frames per second, ensuring fluid video playback and responsive touch interaction.
ADVANCED COOLING SYSTEM - Stay cool under pressure with dual copper heatsinks and a silent 30mm fan, maximizing Raspberry Pi 4 performance without overheating.
CRISP 4 INCH IPS DISPLAY - Experience vibrant colors and wide viewing angles with a sharp 800x480 resolution touchscreen — perfect for coding, media, and gaming on the go.
ALL IN ONE PORTABLE SETUP - Includes a sleek orange case, touch pen, and step-by-step installation videos — making your Raspberry Pi 4 build look as professional as it performs.
PLUG PLAY COMPATIBILITY - Seamlessly supports Raspberry Pi 4 models (2GB/4GB/8GB) and popular OS like Raspbian, Kali, Ubuntu, and Octopi — with easy-to-install touch drivers included.

The Miuzei Raspberry Pi 4 4-inch IPS touchscreen monitor delivers a crisp 800x480 resolution with a smooth 60 FPS refresh rate, supporting HDMI audio and video input/output. Designed for Raspberry Pi 4 models (2GB/4GB/8GB), it features a sensitive resistive touch panel compatible with major OS like Raspbian and Ubuntu. Equipped with dual copper heatsinks and a 30mm cooling fan, it ensures optimal thermal management. The package includes a stylish orange case, touch pen, and comprehensive installation guides, making it a complete, professional-grade display solution for Raspberry Pi enthusiasts.

Brand	Miuzei
Manufacturer	Miuzei
Series	MC21-4
Package Dimensions	18.01 x 15.29 x 3.71 cm; 141 g
Item model number	raspberry pi 4 monitor
Color	オレンジ
Standing screen display size	4 Inches
Screen Resolution	800×480。
Resolution	800*480 ピクセル
Processor Count	1
Number of USB 2.0 Ports	1
Number of HDMI Ports	1
Voltage	5 Volts
Power Source	DC。
Item Weight	141 g

Miuzei Raspberry Pi 4 タッチスクリーンケースファン付き 4インチ IPS タッチスクリーンLCDディスプレイ 800x480 HDMIモニター RPI 4b 8gb/4gb/2gb タッチペン付き (Raspbian/Kali/Octopi/Ubuntuに対応) - Raspberry Piなし

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Miuzei Raspberry Pi 4 タッチスクリーン ケースファン付き 4インチ IPS タッチスクリーンLCDディスプレイ 800x480 HDMIモニター RPI 4b 8gb/4gb/2gb タッチペン付き (Raspbian/Kali/Octopi/Ubuntuに対応) - Raspberry Piなし

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Specifications

Have a Question? See What Others Asked

Common Questions

Miuzei Raspberry Pi 4 タッチスクリーンケースファン付き 4インチ IPS タッチスクリーンLCDディスプレイ 800x480 HDMIモニター RPI 4b 8gb/4gb/2gb タッチペン付き (Raspbian/Kali/Octopi/Ubuntuに対応) - Raspberry Piなし