A. 1. Update the App: Ensure that you are using the latest version of DingTalk. Go to the App Store, search for DingTalk, and check if an update is available. If so, download and install it. 2. Clear Cache: Go to your iPhone Settings > General > iPhone Storage > DingTalk. Here, you can offload the app to clear its cache without deleting your data. Reinstall the app afterward to see if it resolves the crashing issue. 3. Restart Your Device: Sometimes, simply restarting your iPhone can resolve temporary glitches that may cause apps to crash. Hold down the power button and slide to power off, then turn it back on after a few seconds.

B. 4. Reinstall the App: If the above steps do not work, try deleting the app and reinstalling it. Press and hold the DingTalk app icon until it wiggles, tap the 'X' to delete it, then go to the App Store to download it again.