Fix Infinix Smart 20 Overheating & Frame Drops – 2026 Guide

Table of Contents

I was deep into a ranked Mobile Legends match, sitting in my usual spot in a New York coffee shop, when I felt it. My phone started getting uncomfortably warm. Then hot. Then scorching. Within minutes, my thumb was actually burning against the side frame.

The game stuttered. Frames dropped from 60 to what felt like 15. Characters were teleporting across the screen. My hero died — twice — because I couldn't react in time. I threw my phone onto the table, shook my hand to cool it down, and watched my team lose a match I should have won.

If you're reading this because your own Infinix Smart 20 turns into a miniature space heater whenever you try to game or multitask, I know exactly what you're going through. That frustration of watching your performance tank just when you need it most. The worry that you might actually damage your phone if you keep pushing it.

Here's the thing: I fixed mine. After weeks of testing, research, and trial-and-error, I found a combination of settings and habits that keeps my phone cool and playable. This guide will take you about 15–20 minutes to work through, depending on which solution ends up being right for your situation.

Four Things You Need to Know Right Now

• The Helio G81 Ultimate: is an overclocked older chip. It's built on a 12nm process — outdated in 2026 — and it generates more heat than it can dissipate. This is physics, not a defect.
• Thermal throttling: is automatic and aggressive. When the chip hits its temperature limit, the system forces performance down to protect the hardware. That's why your frames drop so suddenly.
• Not all games are created equal: Light games like Mobile Legends on medium settings run fine. Heavy games like Genshin Impact will cook your phone. Know your limits.
• You can manage this: The right settings, habits, and accessories make a real difference. I went from rage-quitting to actually enjoying mobile gaming again.

The Day I Almost Fried My Phone

It started about three weeks after I bought my Infinix Smart 20. I'd heard good things about the 120Hz display and the big 5,200mAh battery. For around $170 (roughly Rs 12,990), it seemed like a steal.

The first week was fine. Social media, YouTube, browsing — smooth and cool. Then I installed Call of Duty Mobile.

Within ten minutes of gameplay, the back of my phone was uncomfortably hot. After twenty minutes, it was genuinely painful to hold. The frame rate tanked. The game became unplayable. I'd spent good money on a phone that couldn't handle what it was advertised to handle.

I spent the next month obsessively researching. I read every forum thread, watched every YouTube video, and tested every setting I could find. Some things helped a little. Some did nothing. But eventually, I pieced together a system that actually works.

⚠️ DISCLAIMER & DATA BACKUP WARNING

STOP. READ THIS FIRST.

I'm sharing what worked for me based on my personal experience. I am not responsible for any further damage to your device. Every situation is different — what worked for my phone might not work for yours.

Before you try anything in this guide, back up your data. While most of these fixes don't wipe your phone, some involve clearing app data or resetting settings. Make sure your Google Photos, Contacts, and other critical data are synced to the cloud before proceeding.

Also, overheating can damage your battery over time. If your phone is consistently hot to the touch, you're shortening its lifespan. Take this seriously.

Match Your Symptoms: Diagnostic Table

Symptoms	Common Causes	Jump to Solution
Phone gets warm during normal use (social media, browsing)	Background apps, high brightness, poor ventilation	Solution #1: Background App Cleanup
Phone gets hot during gaming, frames drop significantly	Thermal throttling, high graphics settings, prolonged gaming	Solution #2: Graphics & Performance Tuning
Phone overheats while charging	Using phone while charging, fast charging, faulty cable	Solution #3: Charging Habits
Phone overheats even when idle	Rogue app, malware, system bug	Solution #4: System Reset
Phone becomes too hot to hold during gaming	Prolonged gaming, poor case ventilation, high ambient temperature	Solution #5: Cooling Accessories
Phone overheats after system update	Buggy OTA update, corrupted system files	Solution #4: System Reset

The Fixes: From Safest to Most Effective

Start with Solution #1 and work your way down. I tried all of these, and a combination of #1, #2, and #5 is what finally solved my overheating issues.

Solution #1: The Background App Cleanup

Estimated time: 5 minutes | Success rate: ~20%

This is the easiest fix — and the one most people skip. Background apps are a major source of heat.

• Step 1: Open Phone Master (the built-in Infinix optimization app). Tap "Clean" to clear junk files and close background processes.
• Step 2: Go to Settings > Apps > Running Services and manually stop any apps you don't need running.
• Step 3: Disable auto-start for apps you rarely use. Go to Settings > Apps > Auto-Start Management and toggle off unnecessary apps.
• Step 4: Restart your phone. A simple reboot clears temporary files and resets background tasks.
• Why this works: Every app running in the background uses CPU cycles and generates heat. Closing them reduces the load on the processor.
• My experience: This helped a little, but didn't solve the gaming overheating. Still, it's a good daily habit.

Solution #2: Graphics & Performance Tuning

Estimated time: 10 minutes | Success rate: ~40%

This is where the real gains happen. The Helio G81 Ultimate simply can't handle high graphics settings in demanding games.

• Step 1: Lower in-game graphics settings. For Mobile Legends or Free Fire, set graphics to "Medium" or "Smooth". Turn off shadows, anti-aliasing, and high-quality effects.
• Step 2: Enable Game Mode. Swipe down from the top-right corner and tap the Game Mode icon (or go to Settings > Game Mode). This prioritizes gaming performance and reduces background activity.
• Step 3: Reduce screen brightness. High brightness forces the display to draw more power, generating extra heat. Keep it at 50–70% during gaming.
• Step 4: Turn off 120Hz refresh rate for gaming. Go to Settings > Display > Refresh Rate and set it to 60Hz. The 120Hz display looks gorgeous for scrolling, but it puts extra strain on the GPU during gaming.
• Step 5: Enable "Bypass Charging" if your game supports it. This powers the phone directly from the charger instead of the battery, reducing heat generation.
• Why this works: The Helio G81 Ultimate is a budget chip with a Mali-G52 MC2 GPU. It's not designed for high-end gaming. Lowering settings reduces the workload and keeps temperatures manageable.
• My experience: This made a dramatic difference. Mobile Legends runs smoothly on medium settings with virtually no frame drops. The phone still gets warm, but not painfully hot.

Solution #3: Smart Charging Habits

Estimated time: 5 minutes | Success rate: ~15%

Charging generates heat. Using your phone while charging generates even more heat. Doing both while gaming is a recipe for disaster.

• Step 1: Never game while charging. This is the #1 cause of overheating on any phone, not just the Infinix Smart 20.
• Step 2: Use the original 15W charger that came with your phone. Third-party chargers, especially fast chargers, can deliver inconsistent voltage and generate excess heat.
• Step 3: Remove your phone case while charging and gaming. Cases trap heat and prevent dissipation.
• Step 4: Charge your phone in a cool, well-ventilated area. Avoid direct sunlight or warm surfaces.
• Why this works: Charging generates heat internally. Adding gaming on top of that is like running a marathon while eating a hot meal — your body can't handle both at once.
• My experience: I stopped gaming while charging entirely. My phone runs noticeably cooler now.

Solution #4: System Reset & Update Check

Estimated time: 20–30 minutes | Success rate: ~50%

Sometimes the problem is software, not hardware. A buggy update or corrupted system files can cause excessive CPU usage and heat.

• Step 1: Check for system updates. Go to Settings > About Phone > System Update and install any available updates. Infinix pushes regular patches that can fix overheating issues.
• Step 2: Clear system cache. Power off your phone, then press and hold Volume Up + Power to enter Recovery Mode. Navigate to "Wipe Cache Partition" and confirm. This doesn't delete your data.
• Step 3: If nothing works, consider a factory reset. Go to Settings > System > Reset options > Erase all data (factory reset).

⚠️ CRITICAL WARNING: A factory reset will erase everything on your phone. Back up your data first.

• Why this works: Corrupted system files can cause the CPU to work harder than necessary, generating excess heat. A clean slate often resolves this.
• My experience: I didn't need to factory reset — an OTA update fixed the worst of my overheating issues.

Solution #5: Cooling Accessories (The One That Finally Worked for Me)

Estimated time: Minimal | Success rate: ~60%

This is what finally made my phone playable for extended gaming sessions. Sometimes you just need better cooling.

• Step 1: Remove your phone case during gaming. Most cases trap heat against the plastic body, preventing dissipation.
• Step 2: Use a cooling fan. External phone coolers that clip onto the back of your device can reduce temperatures by 5–10°C.
• Step 3: Place your phone on a cool surface. A glass table or metal surface draws heat away from the device.
• Step 4: Take breaks. Every 20–30 minutes of gaming, give your phone a 5-minute rest. This allows the passive cooling system to catch up.
• Why this works: The Infinix Smart 20 has no active cooling system — it relies entirely on passive heat dissipation through the plastic body. External cooling helps compensate for this design limitation.
• My experience: Removing my case and using a cheap clip-on fan made a night-and-day difference. I can now game for an hour without the phone becoming uncomfortably hot.

What If Nothing Works? (Repair Cost Reality Check)

If you've tried everything and your phone still overheats to the point of being unusable, you might be dealing with a hardware defect.

Repair Type	Estimated Cost (USD)	Notes
Software optimization (DIY)	$0	Just your time
Software reflash (service center)	$30 – $50	They'll wipe and reinstall the OS
Battery replacement (if swollen/defective)	$20 – $40	Overheating can damage batteries
Motherboard replacement	$80 – $130	Very expensive, rarely worth it
Full phone replacement	~$170	4GB/64GB variant

For context, a brand new Infinix Smart 20 costs around $170 USD for the 4GB/64GB model. If a service center quotes you more than $80 for repairs, it's usually more economical to just buy a new phone.

How I Prevented This From Happening Again

After going through this nightmare, I changed my habits completely. My phone now runs cool even during extended gaming sessions.

• I use a cooling fan: for gaming sessions over 30 minutes. It cost me $15 on Amazon and has been worth every penny.
• I never game while charging: Full stop. No exceptions.
• I keep graphics settings on Medium: It's not worth the extra heat for slightly better visuals.
• I monitor my phone's temperature: I use a simple app called "CPU Temperature" to check temps before, during, and after gaming.
• I remove my case during gaming: The plastic case traps heat. Taking it off makes a noticeable difference.
• I take breaks: Every 20–25 minutes, I put the phone down and let it cool. My win rate has actually improved because I'm not playing through lag anymore.

Why Does This Keep Happening to Infinix Smart 20 Devices?

Let me give you the unvarnished truth — and it's not pretty.

The Infinix Smart 20 is powered by the MediaTek Helio G81 Ultimate, a chip that was announced in August 2024. That sounds recent, but here's the catch: it uses the same Cortex-A75 and Cortex-A55 architecture that dates back to 2019. It's built on a 12nm manufacturing process — ancient by 2026 standards.

The "Ultimate" branding? That's not MediaTek's designation. That's Infinix's marketing label. Independent benchmarks show the Helio G81 delivers performance nearly identical to earlier Helio G-series chips.

Here's the real problem: The chip is an overclocked older design. Overclocking generates more heat. The 12nm process is inefficient — it consumes more power per operation and produces more heat than modern 6nm or 4nm chips. And the phone's slim plastic body (just 7.7mm thick) has no active cooling system to dissipate that heat.

When you combine all of these factors — outdated architecture, inefficient manufacturing, overclocking, and poor heat dissipation — you get a phone that will overheat under load. The system responds with aggressive thermal throttling, which drops your frame rates and makes games unplayable.

My honest rating for durability: 5/10. The Infinix Smart 20 is a solid everyday phone for light use. But for gaming or heavy multitasking, the hardware simply isn't up to the task. The 120Hz display is a gimmick when the chip can't sustain the performance needed to drive it.

Difficulty of fixing this problem: 3/10. The fixes are mostly software and behavior changes. No complex repairs required. But the underlying hardware limitation can't be fixed — only managed.

Frequently Asked Questions (To Calm Your Nerves)

"Is my phone going to permanently break from overheating?"

Probably not in the short term. Modern phones have thermal throttling that kicks in before temperatures reach dangerous levels. But prolonged overheating can degrade your battery over time and shorten your phone's overall lifespan.

"Why does my phone get hot even when I'm not gaming?"

Check for background apps. Some apps run constantly in the background, using CPU power and generating heat. Use Phone Master to clean up background processes.

"Is the Helio G81 Ultimate a bad chip?"

It's not "bad" — it's just old. For everyday tasks like social media, YouTube, and browsing, it's perfectly fine. But it's not designed for demanding gaming or heavy multitasking.

"Will a software update fix the overheating?"

Sometimes. Infinix regularly pushes OTA updates that include performance optimizations. Check for updates regularly. But don't expect a software update to magically fix a hardware limitation.

"Should I buy a different phone instead?"

That depends on your needs. If you're a heavy gamer, the Infinix Smart 20 is probably not the right phone for you. Look for something with a newer chipset like the Dimensity 6300 or Snapdragon 6 Gen 1. If you mainly use your phone for everyday tasks, the Smart 20 is still a good value.

"What's the best cooling accessory?"

A clip-on phone cooler. They cost $15–30 and can reduce temperatures by 5–10°C. I use one for gaming sessions longer than 30 minutes and it's been a game-changer.

"Is the 120Hz display worth it on this phone?"

For scrolling, yes. It makes social media and web browsing feel incredibly smooth. For gaming, not really — the chip can't maintain 120fps in most games anyway.

Your Next Steps

Look, I've been where you are. That frustration of watching your phone turn into a hot brick mid-game. The disappointment of realizing your new phone can't do what you wanted it to do.

But here's what I want you to take away from this:

First, understand your phone's limits. The Helio G81 Ultimate is a budget chip — treat it like one. Lower your graphics expectations and you'll have a much better experience.

Second, implement the fixes. Start with the easy stuff — close background apps, lower graphics settings, and stop gaming while charging. These alone will make a noticeable difference.

Third, invest in cooling if you're a gamer. A $15 clip-on fan will transform your gaming experience. It's the best money I've spent on accessories.

And finally, bookmark this page. Share it with someone who's struggling with the same issue. The Infinix Smart 20 is a great budget phone for what it offers — but like any budget device, it has its quirks. Knowing how to work around them is half the battle.

Stay cool. Game smart. And remember: your phone isn't broken — it's just working as hard as it can.

Have you experienced overheating issues with your Infinix Smart 20? Drop a comment below — I read every single one and try to help where I can.