galaxy s4 delays making calls and text messages

Dear Samsung users:

Based on your description, we recommend that you:

1. Check the memory capacity, clear data, uninstall infrequently used software and install it yourself Third-party software

2. In standby mode, press and hold the middle physical button of the phone for more than 2 seconds - select the lower left button on the pop-up interface - if there are active applications, select End All on the right

3. If there is an external SD card inserted into the phone, take it out and test it

4. Back up the phone data (phone book, text messages, multimedia files, etc.) and restore factory settings

If the problem persists, it is recommended that you bring the purchase invoice and repair card and send the phone to the nearest Samsung service center for inspection and repair

It is recommended that you make an "appointment in-store" repair application on the Samsung official website , enjoy priority maintenance services: /pre-booking

After a successful appointment, please bring your machine, invoice and warranty card to visit the service center you reserved on time.

For comments, suggestions, and complaints, please click: support.samsung.com.cn/survey