Why can't iphone 5s SMS be sent out?

IPhone can't send SMS, so you can troubleshoot it in the following ways:

1. Whether the cell phone signal is normal;

2. Check whether the SIM card status is normal;

3. Check whether the send key is bright and clickable;

4. If you can't click Send after entering the text, the "Send" key is still gray. Please turn off "Show Subject Bar" in Settings > SMS >.

5. If you send text messages to multiple people and manually enter numbers, please make sure to use line breaks instead of spaces to separate each number;

IPhone is a series of smart phones developed by Apple [1], which is equipped with the iOS mobile phone operating system developed by Apple. The first generation of iPhone was released by Steve Jobs, CEO of the company, on June 9, 2007, and officially released on June 29 of the same year.

September 20 13 13, Apple launched the seventh generation products, namely the iPhone5C and iPhone5S, which were officially released on September 20 of the same year. The eighth generation iPhone6 and iPhone 6? Plus was officially released on September 20 10 14. On September 8, 20 16, the iPhone 7 and iPhone 7 Plus were officially unveiled, and the appointment was opened on September 9, and it was officially launched on September 16. 2017 September 13, Apple released three new iPhones, namely, the 4.7-inch iPhone 8, the 5.5-inch iPhone 8 Plus and the 5.8-inch iPhone X..