OS 18.4.1 with so many troubles (Heat, Magsafe, Compatibility)

Van_Thanh wrote:

1. With the same game Gardenscapes, other OSes have no problem, but this OS is very hot;

📱Facing iPhone heating issues? Here's what worked for me

1️⃣ Backup on iCloud/iTunes

2️⃣ Log out of Apple ID

3️⃣ Erase (Keep eSIM Data)

❌ DO NOT restore from backups! Set up as new iPhone. Wait 2-3 days - no issue! That Indicates...

✅ No hardware/ iOS issue

Now...

📦 Restore data gradually

🔍 Find app/settings causing heat

My experience says this is purely caused by some third-party app that you may have installed.

I am not aware of the ambient temperature in which you are using the iPhone. However --> Keeping iPhone, iPad, and iPod touch within acceptable ...

Store the device where the temperature is between -20º and 45º C (-4º to 113º F). Don’t leave the device in your car, because temperatures in parked cars can exceed this range.

Use iOS devices where the ambient temperature is between 0º and 35º C (32º to 95º F). Low- or high-temperature conditions might cause the device to change its behavior to regulate its temperature. Using an iOS device in very cold conditions outside of its operating range might temporarily shorten battery life and could cause the device to turn off. Battery life will return to normal when you bring the device back to higher ambient temperatures. Using an iOS device in very hot conditions can permanently shorten battery life.

Van_Thanh wrote:

2. Third-party magsafe chargers, such as Anker, only receive a maximum of 7w. I have tried 2 devices, the one using OS 18.3 gets 15-16, but the one using OS 17.4.1 only gets a maximum of 7w.

Search for accessories that have completed MFi certification. Once an accessory has completed MFi certification requirements and is reported to Apple as sold/distributed, it will be searchable in our public database of authorized Lightning, headset, charging, iAP-enabled, and Find My network-enabled accessories.

Learn how to identify counterfeit or uncertified Lightning-based accessories.

Van_Thanh wrote:

In addition, my Mac connected to the Samsung S9 ViewFinity screen also has an error when upgrading to OS 18.4.1.

If your Mac is connected to a Samsung S9 ViewFinity monitor and you experienced an error after upgrading to macOS 15.4.1 (likely what you meant by "OS 18.4.1" — macOS versions are currently in the 15.x range), it could be due to a compatibility issue between macOS and the monitor.

Please get in touch with Samsung Dealers.

Van_Thanh wrote:

....and the refresh rate drops to 30Hz, and it will repeat every time the screen sleeps and you wake it up again.

The iPhone 13 Pro, 14 Pro, 15 Pro, 16 Pro, and Pro Max versions, and the iPad Pro ProMotion displays are capable of dynamically switching between:

• Faster refresh rates up to 120Hz
• Slower refresh rates down to 24Hz or 10Hz

This dynamic switching means your app can present smooth, seamless animations and take advantage of power-saving opportunities. Your app may already be capable of taking advantage of these new refresh rates without any changes. Some framework animation features handle frame pacing automatically for you, including Optimizing ProMotion refresh rates for iPhone 13 Pro and iPad Pro | Apple Developer Documentation

Benefits of the iPhone 13, 14, 15 Pro, 16 Pro, and Max versions's adaptive refresh rate:

Experience unparalleled smoothness without sacrificing battery life:

One of the biggest advancements in smartphone displays is the jump to high refresh rates. While these displays deliver a buttery smooth experience, especially when scrolling or gaming, they can come at the cost of increased battery drain. The iPhone 13, 14, 15 Pro, 16 Pro, and Max versions tackle this issue head-on with their innovative adaptive refresh rate.

This technology allows the display to intelligently adjust its refresh rate from 10Hz to a blazing-fast 120Hz. What does this mean for you? When you're engaged in fast-paced activities like gaming or watching high-frame-rate videos, the display will seamlessly switch to 120Hz, ensuring incredible responsiveness and a visually stunning experience.

However, for everyday tasks like reading an email or browsing the web, the refresh rate can be set to a lower setting, like 10Hz. This significantly reduces battery consumption without any noticeable impact on smoothness. It's a win-win situation!

The iPhone 13, 14, 15 Pro, 16 Pro, and Max versions prioritize both a stunning visual experience and long-lasting battery life. The adaptive refresh rate is a key feature that contributes to this balance, making it a perfect choice for users who value both