Correct Huawei P60 Pro Screen Flicker With Samsung SuperCharge 20000

Introduction

Screen flicker is a common annoyance for many smartphone users, especially when the device is connected to an external power source. On the Huawei P60 Pro, a high‑resolution display and a rapid 120 Hz refresh rate can make flicker more noticeable. When the phone is charged with a Samsung SuperCharge 20000 mAh power bank, users may notice the screen flashing or stuttering during the charging process. This article explains why the flicker occurs, how to identify the root cause, and practical steps you can take to resolve the issue. Whether you rely on the power bank for long trips or use it as a backup charger at home, the information below will help you keep your display smooth and stable.

Why the Huawei P60 Pro Flickers During Samsung SuperCharge

The P60 Pro was designed to accept up to 66 W of fast charging. The Samsung SuperCharge 20000 is a 25 W charger (10 V × 2.5 A) that implements Samsung’s proprietary charging protocol. While the P60 Pro is compatible with USB‑Power‑Delivery (PD) and can handle a wide range of voltages, the combination of different protocols and hardware can sometimes trigger display instability.

1. Voltage and Current Mismatch

The P60 Pro’s internal power management unit (PMU) expects a certain voltage profile to safely regulate the battery. When the power bank supplies a lower voltage or a different current profile than what the phone anticipates, the PMU may oscillate between charging modes. This oscillation can cause brief interruptions in the display controller’s power supply, leading to flicker.

2. USB‑C Cable Quality

High‑quality USB‑C cables contain proper shielding, sufficient conductor thickness, and accurate pin mapping. Cheap or damaged cables can introduce resistance or signal noise. When the charging current is irregular, the display receives unstable power, resulting in flicker.

3. Power Bank Firmware and Charging Modes

The Samsung SuperCharge 20000 can output different charging modes: Standard (5 V × 2 A), Fast (9 V × 2 A), and SuperCharge (10 V × 2.5 A). If the power bank’s firmware or hardware is outdated, it may default to a mode that the P60 Pro does not optimally support. A mismatch in mode selection can trigger power management alarms, causing the screen to flash.

4. Adaptive Refresh Rate and Brightness Settings

The P60 Pro supports adaptive 120 Hz refresh rate and adaptive brightness. When charging, the phone often reduces the refresh rate to save power. If the power bank’s output is unstable, the phone may repeatedly toggle the refresh rate, which manifests as flicker.

5. Firmware or Software Bugs

Occasionally, a recent system update or a corrupted firmware file can introduce bugs that affect how the phone handles external power. The firmware may incorrectly detect the charger type and mismanage the display timing.

Step‑by‑Step Troubleshooting Guide

Below is a structured approach to diagnosing and fixing the screen flicker. Follow the steps in order; if one step resolves the issue, you can stop there.

Step 1 – Verify the Cable

1. Inspect the cable for visible damage: kinks, frayed insulation, or broken connectors.
2. Try a different cable: Use a certified USB‑C to USB‑C cable that supports 100 W.
3. Test with a built‑in phone charger: Connect the phone to its original charger and observe whether flicker persists.

If the flicker disappears with a different cable or the original charger, the issue lies with the cable or the power bank’s output.

Step 2 – Test the Power Bank Output

1. Check the power bank’s voltage and current output: Use a multimeter or a dedicated USB‑C tester to read the actual voltage and current when the phone is connected.
2. Confirm the selected charging mode: Some power banks have physical switches or an app to select Fast or SuperCharge mode.
3. Compare with the phone’s expectations: The P60 Pro can accept 5–20 V in 0.5 V steps. A 10 V output is acceptable, but if the power bank defaults to 5 V or 9 V, the phone may throttle the display.

If the power bank outputs 5 V while the phone expects 10 V, flicker can occur.

Step 3 – Update Firmware

1. Power bank firmware: Check the Samsung official website or the app that manages the SuperCharge 20000 for any available firmware updates.
2. Phone software: Ensure that the P60 Pro is running the latest system update. Huawei often releases patches that improve power management.

After updating, reconnect and observe whether flicker is gone.

Step 4 – Disable Adaptive Features

1. Disable Adaptive Refresh Rate:
   • Go to Settings → Display → Advanced → Refresh rate.
   • Set it to 120 Hz (fixed) or 60 Hz if the option exists.
2. Turn off Adaptive Brightness:
   • Settings → Display → Brightness.
   • Disable Adaptive Brightness and set a stable brightness level.

A fixed refresh rate reduces the likelihood of the display controller toggling during power fluctuations.

Step 5 – Check Battery Health

1. Open Settings → Battery → Battery health.
2. Look for any abnormal temperature or voltage readings while the phone is charging with the power bank.

If the battery temperature rises above 45 °C or shows irregular voltage, the charger may be delivering inconsistent power. Consider using a charger that matches the phone’s peak charging power.

Step 6 – Try a Different Power Source

1. Connect to a wall outlet charger that supplies 10 V × 2.5 A (25 W) or higher.
2. Use a different portable charger that explicitly supports 66 W or higher output.

If the flicker stops, the Samsung SuperCharge 20000 is likely insufficient for the P60 Pro’s power demands under certain conditions.

Step 7 – Reset Power Management Settings

1. Clear the device’s charging history:
   • Settings → System → Reset options → Reset battery statistics.
2. Perform a soft reset: Hold the Power button and Volume Down for 10 seconds until the device restarts.

This clears cached charging parameters that might be causing the display to misbehave.

Step 8 – Consult Technical Support

If all previous steps fail, contact Huawei customer support or Samsung support. There may be a hardware defect in the power bank’s output circuitry or in the phone’s PMU.

Understanding the Interaction Between Huawei P60 Pro and Samsung SuperCharge

To prevent future flicker, it helps to understand the underlying protocols that govern the charging interaction.

USB‑Power‑Delivery (PD) Basics

• Negotiation: When two devices connect, they negotiate the highest compatible voltage and current.
• Profiles: Common PD profiles include 5 V × 2 A, 9 V × 2 A, 12 V × 1.5 A, and 20 V × 5 A.
• Safety: The PMU enforces current limits to protect the battery.

The P60 Pro will negotiate a profile that matches the power bank’s capabilities. If the negotiation fails, the phone defaults to a lower profile that may not be stable.

Samsung SuperCharge vs. PD

Samsung’s SuperCharge is a proprietary protocol that allows 10 V × 2.5 A or higher. It is backward compatible with USB‑PD but may expose additional power states. If the phone’s firmware does not fully support SuperCharge’s nuances, it may misinterpret the signal, leading to flicker.

Firmware and Driver Compatibility

Both the phone and the power bank run firmware that controls hardware behavior. Even minor differences in the firmware implementation can cause display instability during charging. Regular updates are essential to keep the negotiation process smooth.

Preventive Tips for a Flicker‑Free Charging Experience

Once the issue is resolved, these best practices will keep your display steady.

• Use a reputable USB‑C cable that is 100 W rated.
• Avoid mixing cables and chargers from different manufacturers unless confirmed compatible.
• Keep firmware updated on both phone and power bank.
• Monitor battery temperature: If it spikes during charging, stop and let the phone cool.
• Set a fixed refresh rate when traveling or using portable power.
• Keep the power bank’s firmware current by installing updates through the official app.
• Consider a dedicated high‑output charger if you frequently charge in transit or during battery depletion.

By following these practices, you can minimize the chances of screen flicker and extend the lifespan of both your phone and power bank.

Common Questions and Answers

Q1 – Does the Samsung SuperCharge 20000 provide enough power for the P60 Pro?

The power bank can supply up to 25 W. The P60 Pro’s peak charging requirement is 66 W. While 25 W is sufficient for a slow charge, it may not support the phone’s rapid charging modes, potentially causing power fluctuations that trigger flicker.

Q2 – Will using a lower‑rated charger eliminate flicker?

A charger that matches the phone’s peak charging requirement (66 W or higher) will provide a stable power supply and eliminate flicker. However, the phone will charge faster, which may raise battery temperature. Balance speed and stability by using a 45‑55 W charger as an intermediate option.

Q3 – Can software updates fix the flicker if the hardware is compatible?

Yes. Software updates often improve power‑management algorithms and display control. If the flicker persists after hardware verification, check for a new system update or a firmware patch for the power bank.

Q4 – Why does the flicker occur only during charging and not when the phone is on battery?

During charging, the phone’s power regulator actively manages current flow to the battery. Any irregularity can ripple into the display subsystem. When on battery, the power source is stable (the battery itself), so the display remains steady.

Q5 – Should I disable Wi‑Fi or Bluetooth to reduce power fluctuations?

Disabling Wi‑Fi or Bluetooth reduces power draw but does not affect the charging current. The flicker is primarily caused by the power supply, not peripheral usage.

Conclusion

Screen flicker on the Huawei P60 Pro while charging from a Samsung SuperCharge 20000 power bank is typically a symptom of voltage, current, or protocol mismatch. By systematically checking cables, power bank output, firmware, and adaptive display settings, most users can resolve the issue. Maintaining updated firmware on both devices, using high‑quality cables, and choosing a charger that matches the phone’s power demands are the most reliable long‑term solutions. Should problems persist, professional support from Huawei or Samsung is recommended.

With a stable charging environment, you can enjoy the P60 Pro’s stunning display without distraction, whether you’re on a long flight, exploring the city, or simply at home.