Phone overheating is not only annoying (slow phone, dim screen, worse battery), but can also affect battery life and device stability in the long run. The good news: in most cases, you can significantly reduce overheating with a few habits and the right accessories.

In this guide, you'll get practical tips and an explanation of why your phone heats up in the first place. In the second part, we'll continue with the very practical part: what to buy to minimize overheating (cable, charger, power bank, case...).

Why does your phone heat up? (quick, understandable)

A phone is a small computer. When the processor, screen, modem (signal), and battery work simultaneously, energy is converted into heat. If the heat cannot dissipate quickly enough into the environment, the temperature rises.

The most common triggers are:

• Strong sun (car, beach, windowsill)
• Charging + use at the same time (especially games, video, navigation)
• Poor or unsuitable cable/charger (unstable current, more losses)
• Thick case without ventilation or material that retains heat
• Heavy applications (camera, 4K video, video calls)
• Poor signal (phone increases antenna power to catch network)
• Background apps (syncs, location, backup)

Important: occasional heating is normal. The problem is if the phone frequently overheats, turns itself off, constantly reduces brightness, or is hot even with basic use.

10 quick measures when your phone heats up

If the phone is already hot, the goal is: reduce the load and remove it from the heat.

1) Put it in the shade (and out of the car)

The quickest fix is to move your phone out of direct sunlight. A car is extreme in summer — even if the phone is just on the seat.

2) Turn off the screen for 2–5 minutes

The screen is a major energy consumer. A short "screen off" often immediately lowers the temperature.

3) Turn off unnecessary connections

If you don't need them, temporarily turn off Bluetooth, Wi-Fi, mobile data, and location. This is especially effective when you are in an area with a poor signal.

4) Turn on airplane mode (if possible)

If you don't need calls, airplane mode is one of the quickest ways to stop your phone from "catching" the network.

5) Close heavy applications

The apps that generate the most heat are the camera (4K video), navigation, games, and video calls. Close them and leave the phone alone for a few minutes.

6) Do not charge your phone when it is hot

Charging generates additional heat. If the phone is really hot, cool it down first, then charge it.

7) Remove the case (temporarily)

Some cases retain heat. If the phone is hot, remove it for a few minutes.

8) Lower brightness and turn off "Always-On"

Less brightness = less heat. If you have an Always-On display, temporarily turn it off.

9) Update apps and system

Sometimes overheating is caused by a "bug" or an app stuck in the background. Updates often solve such problems.

10) Do not cool it aggressively

Do not put your phone in the freezer or on icy surfaces — condensation can cause damage. It's better: shade, airy place, peace.

How to prevent overheating in the long term (habits that make the biggest difference)

1) Don't leave your phone in the sun

This is the #1 reason in summer. If you're outside, keep it in your bag or in the shade. Don't leave it in the car even "for 5 minutes".

2) Don't play/stream during fast charging

The combination of fast charging + high load is a recipe for heat. If you must, charge slower or use the phone minimally.

3) Watch the signal

When the signal is poor, the phone works harder. If you frequently notice heating in certain areas (basement, warehouse), consider Wi-Fi calls or moving closer to a window.

4) Clean the "background"

Check apps that constantly use location or synchronization. Fewer processes = less heat.

5) Use a quality cable

A poor cable can cause slow charging, current fluctuations, and more heating. If you want verified cables, check them out at this link.

When is overheating a sign for service?

If your phone frequently overheats even with normal use, pay attention to these signs:

• the battery drains very quickly or the phone turns off at a higher percentage
• the phone is hot for no apparent reason (e.g., just browsing)
• charging is unusually slow even with a good charger
• you notice battery swelling or case deformation

In such cases, it is wise to check the battery or the device's condition.

What to buy to prevent overheating (and how to choose correctly)

If your phone often heats up, it's usually a combination of habits + accessories. In Part 1, we covered what to do immediately and which habits help the most. Now let's move on to the practical part: what to buy to make your phone less stressed, charging more stable, and to minimize overheating in the summer.

Below are recommendations by category (without "miracle" promises), plus a mini-guide on how to choose the right thing.

1) Quality cable (the basis for stable charging)

The cable is often underestimated. With poor cables, there are more losses, which means:

• more heat (losses are converted into heat)
• slower charging
• current fluctuations (the phone can heat up additionally)
• faster wear of connectors

What to look for when choosing a cable:

• Correct connector: USB-C ↔ USB-C, USB-A ↔ USB-C or USB-A ↔ Lightning (depending on the phone)
• Fast charging support: if you use fast chargers, the cable should support it (otherwise it will be a bottleneck)
• Reinforced connectors: less breakage, less "searching for the right angle", fewer interruptions
• Length: a too-long cable can be less efficient; for car/office, 1–1.5 m is often ideal

2) Charger that is suitable for your phone (ideally GaN)

A good charger is important because it provides a stable current and is often more efficient — less energy goes to heat. A poor charger or "no-name" adapter can:

• charge unstably
• heat itself and the phone
• cause slow charging or interruptions

How to choose a charger to be "cooler" and more efficient:

• Don't overdo it with power if you don't need it: the phone will take as much as it supports, but the quality of the adapter is key
• Choose a charger with verified fast charging standards (depending on the phone brand)
• GaN chargers (if available) are often smaller and more efficient, so in practice they may heat up less

Pro tip: if your phone often gets hot while charging, try charging in two modes:

1. during the day "top-up" (short charge to e.g., 60–80%)
2. in the evening slower (if you have the option)

This often reduces heating and is kinder to the battery.

3) Power bank: smart charging on the go (no hunting for outlets)

When you're out, your phone often works the hardest: navigation + mobile data + bright screen + camera. That's when heating is more likely. A good power bank helps because:

• allows charging in the shade (no need to stand by an outlet in the sun)

• can charge more stably than poor adapters in public places

• is great for vacation, car, festivals, trips

Choose a quality power bank.

How to choose a power bank to be truly useful:

• Capacity: for one phone, it's practical to have at least 1–2 charges
• Output power: if you want faster charging, the power bank should support it
• Cable: here too — a poor cable = more losses = more heat

Tip for less heating:

• if the phone heats up, it's better to charge in shorter intervals (e.g., 10–15 min), in the shade, and not while playing games or recording video.

4) Case: protection YES, "thermos" NO

A case is great for protection, but some materials and very thick models retain heat. If your phone often heats up in the summer, consider having:

• one "stronger" case for protection (e.g., for work, field)
• one thinner case for summer or for days when you're out a lot

How to choose a case that heats less:

• rather a thinner case or one that doesn't completely enclose the phone in "rubber"
• avoid extremely thick cases in summer months
• if you frequently use MagSafe accessories, choose a MagSafe compatible case (so you don't need additional metal rings)

5) Screen protector: fewer scratches, less "panic" during use

A screen protector does not directly cool the phone, but it helps indirectly: when the screen is protected, people often compensate less with ultra-thick cases or "armor". In addition, the phone is more "worry-free" for use on the go.

6) Mini "shopping" checklist: what to buy based on your scenario

To make the choice really simple, use these mini sets:

Car set (summer + navigation)

• quality cable
• good charger
• possibly a thinner case

Holiday set (sun + photos + power)

• power bank
• quality cable
• screen protector

Office set (stable charging without overheating)

• good charger
• quality cable (appropriate length)

Conclusion + quick summary

If you want less overheating, the goal is not a "miracle" product, but a combination of:

• smart habits (shade, less load, don't charge while playing)
• stable charging (quality cable + good charger)
• smart energy reserve (power bank)
• a case that doesn't act like a thermos