How to Repair TECNO Phone Screen Showing Vertical Line

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Jide Mbaka

Dealing with a TECNO phone screen displaying vertical lines can be a frustrating experience. These unexpected visual anomalies can significantly hinder your device's functionality and overall user experience. Whether caused by hardware issues or software glitches, finding a solution to this problem is essential.

In this article, we will guide you through effective troubleshooting steps and DIY fixes to address the vertical line issue on your TECNO phone's screen. By following these steps, you can regain a clear and uninterrupted display, restoring your device to optimal performance.

Understanding the Issue

Before diving into the solutions, it's essential to understand what might be causing the vertical lines on your TECNO phone's screen. Such lines can occur due to various reasons, including hardware and software issues. Hardware problems might include a damaged display, loose internal connections, or a malfunctioning GPU. On the other hand, software glitches or conflicts can also lead to these visual abnormalities.

How to Fix TECNO Phone Screen Showing Vertical Line

Step 1. Restart Your Phone

The first and simplest step is to restart your TECNO phone. Sometimes, temporary software glitches can cause these display issues, and a restart might resolve them.

Step 2. Check for Software Updates

Outdated software can lead to compatibility issues that might result in vertical lines on your screen. Check for any available software updates and install them if necessary.

Step 3. Safe Mode

Booting your phone in safe mode can help determine if a third-party app is causing the problem. If the vertical lines disappear in safe mode, an app might be the culprit.

Step 4. Inspect for Physical Damage

Carefully examine your phone's screen for any physical damage. A cracked or damaged display can lead to visual anomalies. If the screen is physically damaged, it might need professional repair.

Step 5. Factory Reset

Performing a factory reset should be your last resort, as it will erase all data on your device. However, if the issue persists and is software-related, a factory reset can often resolve it.

Step 6. Contact Professional Repair Services

If none of the above steps yield positive results, it's time to seek professional help. Contact TECNO's official support or visit an authorized service center to diagnose and repair the issue accurately.

Do It Yourself(DIY) Fixes

Step 1. Gently Press the Screen: In some cases, a loose internal connection could be causing the problem. Gently press along the edges of the screen to see if the lines disappear or change. Be cautious not to apply too much pressure.

Step 2. Check Display Cables: If you're comfortable opening your device, check for loose or disconnected display cables. Reconnecting them securely might solve the issue.

Dealing with a TECNO phone screen showing vertical lines can be frustrating, but it's not a problem without solutions. By following the troubleshooting steps and, if necessary, attempting the DIY fixes, you can often resolve the issue and enjoy your device's full functionality once again.


1. Can I fix a cracked screen causing vertical lines on my own?

While it's possible, it's recommended to seek professional help to avoid causing further damage.

2. Why did the vertical lines appear after I dropped my phone?

Physical impact from dropping the phone can dislodge internal components, leading to display issues.

3. Will a factory reset delete all my data?

Yes, a factory reset erases all user data, so make sure to back up your important information beforehand.

4. Is the vertical line issue covered under warranty?

If your phone is under warranty and the issue isn't due to physical damage, it's likely covered.

5. How can I prevent future display issues?

Using a sturdy phone case and screen protector can help protect your device from damage that might lead to such problems.

About Carlcare

Carlcare is the Official After-Sales Repair Centre for TECNO, Infinix and Itel Smartphones. We make use of original accessories only for repairs, and when you choose to repair at Carlcare you’re covered by warranty for a period (should the issue reoccur), unlike with other external repair options.