Articles

Solving everyday tech and lifestyle questions — AI, smartphones, PCs, web, work, and life.

New Mac connected to an iPhone with music disappearing

Did All Your Music Disappear After Connecting Your iPhone to a New Mac? 5 Finder Sync Causes and How to Restore It

Ah, so all your music vanished after connecting your iPhone to a new Mac? Finder sync settings may be the trap. Let's walk through five common causes and how to restore your songs with iCloud or a library transfer.

2026.03.147 min佐藤理香

Image illustration of transferring eSIM when changing smartphone model

スマホ・アプリ

Can't transfer eSIM when changing smartphone model? Correct transfer procedure for iPhone/Android and what to do if it fails

Explaining the causes and solutions for the problem of not being able to transfer eSIM when changing smartphone models. We have summarized the steps for iPhone/Android eSIM quick transfer, 5 reasons for failure, and carrier-specific procedures for reissuing eSIM in an easy-to-understand manner.

2026.03.13佐藤理香

Image of smartphone chat app communication being restricted on Wi-Fi at school/work

スマホ・アプリ

Can't send LINE or Discord via Wi-Fi at school or work? How communication restrictions work and 4 ways to deal with them yourself

The reason you can't use LINE or Discord even though you're connected to Wi-Fi at school or work is because of filtering (communication restrictions) on the network side. Explains the mechanisms of port blocking, DNS filtering, and app-level control, as well as four countermeasures you can take, such as switching to mobile data and using the web version.

2026.03.11佐藤理香

Image illustration of smartphone screen being black when screenshots are prohibited

スマホ・アプリ

Can't take screenshots with your smartphone? Screen turns black? Reasons for prohibiting screenshots for each app and 5 solutions [iPhone/Android]

If the screenshots on Netflix or banking apps turn black, it is not a malfunction of your smartphone. We will explain the reasons for prohibiting screenshots for each app (DRM/FLAG_SECURE) and 5 solutions for preserving screen information for iPhone and Android.

2026.03.11佐藤理香

Image illustration of an error that prevents you from posting to X (Twitter) from your smartphone

スマホ・アプリ

Can't post or reply to X (Twitter) from your smartphone? 7 causes and solutions you can try now [iPhone/Android]

Explains 7 reasons why you can't post or reply to X (formerly Twitter) from your smartphone and how to deal with it. Covers 7 patterns: server failure, communication environment, Android permission reset, cache, posting restrictions, account lock, and app bugs. Compatible with both iPhone and Android.

2026.03.10佐藤理香

Image of switching between dark mode and light mode of X (Twitter) app

スマホ・アプリ

Has the dark mode of X (Twitter) disappeared? Reasons why you can't switch within the app and how to deal with it using iPhone shortcuts

Explains the reason why the dark mode switch disappeared with the iOS version X update in March 2026, and how to make only X dark using iPhone settings and shortcut automation.

2026.03.06佐藤理香

Abstract illustration of a subscription list displayed on a smartphone screen

スマホ・アプリ

Are you still paying for a subscription that you don't use? How to check and cancel your subscription on iPhone/Android

Deleting the app will not cancel your subscription. We will explain how to check your subscriptions on both iPhone and Android, the correct cancellation procedure, and tips to prevent unnecessary payments.

2026.03.06佐藤理香

Image of what to do when you cannot cancel a LINE send

スマホ・アプリ

Can't cancel sending on LINE? Changes to the 1-hour limit and what to do if it cannot be canceled [2026 edition]

LINE's send cancellation time was shortened from 24 hours to 1 hour in November 2025. We will explain the 6 reasons why you cannot cancel, the difference from "deletion", how to cancel LYP Premium without notice in 7 days, and what to do if you are unable to cancel.

2026.03.04佐藤理香

スマホ・アプリ

Did all your apps disappear after updating your iPhone? iOS 26 age limit change may be the cause | 6 ways to restore

All apps disappeared after updating to iOS 26! The cause may be the automatic change in age restriction rating. We will explain six restoration methods and future preventive measures in an easy-to-understand manner.

2026.03.04佐藤理香

Illustration of the radiko app displaying an error on a smartphone

スマホ・アプリ

Why can't I listen to radiko? Why do I get an error? 6 causes and solutions you can try now [iPhone/Android/PC]

An easy-to-understand explanation of the 6 main reasons why you can't listen to the radiko app or errors occur, and how to deal with it for iPhone, Android, and PC. We will also introduce alternative methods in the event of a failure and how to tell if it's just you or a server failure.

2026.03.03佐藤理香

Illustration showing poor contact between smartphone charging port (USB-C terminal) and charging cable

スマホ・アプリ

Is your smartphone charging port broken? 6 causes of not being able to charge/poor contact and how to deal with it yourself [iPhone/Android]

Introducing 6 reasons why your smartphone's charging port (USB terminal) may be broken and not be able to charge or have poor contact, as well as solutions you can try on your own before sending it in for repair. We will explain everything from dust cleaning to first aid with wireless charging, and repair costs for iPhone and Android.

2026.03.01佐藤理香

Image illustration of notification collaboration between Google Calendar and LINE

スマホ・アプリ

How to notify LINE of Google Calendar events | 3 alternatives after LINE Notify ends [2026 version]

LINE Notify will end in March 2025, and for those who can no longer notify LINE of their Google Calendar events. We will explain three alternatives: Messaging API + GAS, no-code tools (Yoom/Make), and Remain-kun in a way that even those with no programming knowledge can understand.

2026.02.27佐藤理香

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