Hi there! I understand you’re having trouble sending messages on KakaoTalk via Wi-Fi and experiencing slow message sending times. Just to get a clearer picture:

- Is this issue happening only when connected to Wi-Fi, or also on cellular data?
- Are you noticing that messages stay stuck “sending” for a long time, or do they fail outright?
- Have you tried any troubleshooting steps already, like restarting your phone or checking your internet connection stability?

Once I have these details, I can guide you through the best steps tailored for your iPhone with iOS 18.6.2 to get KakaoTalk running smoothly again.

I checked internet connection also those messages and especially photos or 이모티콘 just stay in the process of sending . Also impossible to call but other apps work as usual. Only katalk has problems

Thanks for the details! It sounds like KakaoTalk is getting stuck while sending all types of messages, including photos and emoticons, and calls aren't working either—though other apps on your iPhone with iOS 18.6.2 work fine. Since this points specifically to KakaoTalk, let's try the following steps to resolve it:

1. Force close and restart KakaoTalk:
- Swipe up from the bottom of your screen and pause slightly in the middle to open the app switcher.
- Find KakaoTalk and swipe it up to close.
- Then reopen KakaoTalk.

2. Check for app update:
- Open the App Store, tap your profile icon, and scroll to see if a KakaoTalk update is available. If yes, install it. Sometimes app updates fix bugs affecting message sending.

3. Reset KakaoTalk cache (in-app settings):
- Open KakaoTalk.
- Go to 'Settings' (usually gear icon) > 'Chats' > 'Clear Cache'.
- Clearing the cache can fix stuck messages without deleting your chat history.

4. Log out and log back in:
- From the settings, log out of your KakaoTalk account and then log back in. This reloads your account data from the server fresh.

5. Reinstall KakaoTalk (if the above doesn’t help):
- Delete the KakaoTalk app (press and hold the icon > Remove App > Delete App).
- Restart your iPhone.
- Reinstall KakaoTalk from the App Store.
- Log in again and try sending messages.

6. Check KakaoTalk server status (rarely, the problem is on Kakao’s side):
- Confirm no ongoing server outages by visiting official KakaoTalk social channels or support web pages.

Since you mentioned photos and calls also fail, I suspect cache issues or corrupted app data are the most likely culprits. Clearing cache or reinstalling usually fixes this. If the problem persists after these steps, the issue might be deeper network or account-related, and contacting Kakao support via [email protected] would be best.

If you want, I can guide you through any of these steps one by one. Are you satisfied with this solution so far?