Fix Tecno Spark 20 Overheating Issue
A smartphone is one of those gadgets that have become important in our lives. It makes communication easy, helps you to locate a place, and keeps you in touch with your friends and family, among several other things.
But, when a smartphone overheats, it starts to lag, the performance drops, the battery drains fast, and the device gets too hot to hold in your hands and comfortably accept calls. You may get warnings such as “Temperature too high” as well.
You may wonder, “How do I fix Tecno Spark 20 Overheating?”.
This is a question I get asked by many people. And I know what it feels like because I’ve been through the same thing.
You can spend hours trying to fix this overheating issue. But if you don’t use the correct methods, you will only waste time and end up frustrated.
In this article, I will share simple and effective ways to fix the overheating issue on your Tecno Spark 20.
Before we try to fix Overheating on Tecno Spark 20, let’s first understand-
Table of Contents
What Is Overheating? Is It an Issue?
Overheating occurs when your Tecno Spark 20’s internal temperature rises beyond its normal operating range.
It’s natural for a phone to feel slightly warm while charging, gaming, or updating apps,
but consistent or extreme heat can slow performance, drain the battery quickly, and even shorten hardware lifespan.
According to
Android Authority
,
smartphone overheating has become increasingly common with the rise of high-performance processors and fast-charging technologies.
Most devices operate safely between 35°C and 45°C,
but prolonged exposure to higher temperatures can degrade battery health
and damage internal components over time.
Tecno Spark 20 Overheating While Charging
If heat appears mainly on the back near the battery while plugged in, start here.
Case
Cases trap heat. Charge on a hard, flat surface with the case off. Avoid beds, sofas, or car dashboards that retain heat.
Firmware
Software bugs can cause inefficient charging. Go to Settings → System → System Update and install any pending updates. After updating, reboot once.
Environment
High ambient temperature (parked cars, direct sunlight, near windows) accelerates heat. Charge in a cool, ventilated spot. If you must use the phone, keep brightness low.
Fast Charging
Fast charging raises current and temperature. If heat is consistent, switch to a standard 5V/2A charger a few times per week. Never game or stream while plugged in.
- Use original Tecno or certified charger with matching voltage/amperage.
- Inspect cable for frays/kinks; replace if warm to the touch.
- Avoid cheap adapters or multi-plug extenders that fluctuate power.
Tecno Spark 20 Overheating While Using
Heat during active use typically points to workload or airflow issues.
Case
Thick cases, metal-backed cases, and wallet covers trap heat. Consider a slimmer, vented case. Keep speaker/port areas unobstructed.
Camera
Long video sessions, HDR, and rapid photo bursts can heat the phone. Close background apps, limit resolution/frame rate, and give the phone a minute to cool between clips.
Gaming
High graphics load the CPU/GPU. Lower in-game graphics and FPS, enable Game Mode, turn off haptics, and close all other apps. If possible, use a small desk fan during long sessions.
Hotspot
Hotspot keeps the modem and CPU active. Use it in short bursts, rest the phone on a cool surface, and turn it off when done. Prefer Wi-Fi over mobile data where possible.
Streaming
HD streaming plus high brightness equals heat. Drop streaming quality slightly, use Wi-Fi, and reduce brightness. Turn off Bluetooth/GPS when not needed.
Tecno Spark 20 Overheating After Update
Post-update heat is common for a few hours while the system re-indexes and optimizes apps. If it persists beyond a day:
- Reboot the device and check for app updates in Play Store.
- Clear cached data in Settings → Storage.
- Review battery usage for runaway apps and uninstall offenders.
- Back up and perform a factory reset if the issue continues.
- Charge to 100% and keep charging for 20 more minutes.
- Use normally to ~10–15% (don’t drain to 0% regularly).
- Charge back to 100% without interruption. Repeat once next week if needed.
None of the Above Solutions Worked?
If heat persists even in Airplane mode, with original charger, and after a reset, hardware may be at fault (battery, PMIC, or thermal pads). Visit an authorized Tecno service center for diagnostics. Avoid uncertified repair shops to protect the warranty and safety.
Wrapping Up
Most Tecno Spark 20 overheating cases come down to airflow, workload, chargers, or background apps. Remove thick cases while charging, keep software updated, use certified chargers, lower graphics, and prune aggressive apps. These simple habits keep performance steady and extend battery health.
For additional insights on smartphone temperature control, check out Google’s official overheating guide.
Frequently Asked Questions
Why does my Tecno Spark 20 overheat so quickly?
Common causes include thick phone cases trapping heat, gaming at high graphics, background apps syncing, charging in hot environments, and using non-original chargers. Remove the case while charging, lower game settings, and close unused apps to reduce heat.
What temperature is safe for my Tecno Spark 20?
Most phones feel normal around 35–45°C during typical use. Frequent temperatures above ~50°C can throttle performance and degrade battery health. If your phone stays hot for long, apply the fixes in this guide.
Is it normal for Tecno Spark 20 to heat while charging?
Mild warmth is normal. Excessive heat usually means poor airflow, a thick case, high ambient temperature, or an incompatible charger. Charge on a flat, cool surface, remove the case, and use an original or certified charger.
How can I quickly cool down my Tecno Spark 20?
Unplug the charger, lock the screen, close all apps, disable mobile data/GPS/Bluetooth, and move to a cooler place. Don’t put the phone in a fridge; the rapid temperature change can cause condensation.
Why does gaming overheat my Tecno Spark 20?
High FPS and effects push the CPU/GPU hard. Lower graphics and frame rate, turn off haptics, close background apps, and avoid charging while gaming. A small desk fan can help during long sessions.
My Tecno Spark 20 overheats after a system update. What should I do?
After updates, the phone re-indexes and optimizes apps, which can warm it up for a few hours. Reboot, update apps from Play Store, clear cached data, and check for rogue background apps. If it persists, back up and factory reset.
Which settings help reduce Tecno Spark 20 overheating?
Lower screen brightness, enable Battery Saver, reduce refresh rate (if available), disable auto-start for heavy apps, turn off unused radios (Wi-Fi/GPS/Bluetooth), and limit background data sync.
Can a phone case cause overheating?
Yes. Thick, rubber, or wallet cases trap heat. Use a slimmer or vented case, or remove it during charging, long calls, or gaming.
Does fast charging make Tecno Spark 20 hotter?
Fast charging increases current and heat. If overheating is frequent, use standard charging sometimes and avoid using the phone while it’s plugged in.
When should I replace the battery?
If you notice swelling, rapid drain, heat when idle, or frequent shutdowns under light use, visit an authorized Tecno service center for diagnostics and possible battery replacement.
Is it safe to use Tecno Spark 20 while charging?
Light use is fine, but heavy tasks (gaming, streaming, hotspot) can produce excess heat. For best results, let it charge undisturbed on a cool, hard surface.
Will a factory reset fix overheating?
It can if the cause is software (buggy apps, corrupted cache). Back up your data first. If heat continues after a reset, it may be hardware—seek professional service.