How to send a short message starting with 10 on iphone?

This is because the phone uses the first 10 as the area code.

Solution: Add +86 before the number, which is the area code of China, and it can be solved.

The area code was copied after the Cultural Revolution. At that time, there was no program-controlled telephone exchange, and there were not many municipal administrative units (mostly regions and few prefecture-level cities). When the local units exceeded 10 but were less than 15, some areas with less long-distance telecommunication traffic shared a regional exchange center.

For example, Huaihua City in Hunan Province, Xiangxi Tujia and Miao Autonomous Prefecture in Hunan Province and Zhangjiajie City in Hunan Province share a regional exchange center with neighboring Chenzhou and Loudi cities in Hunan Province, so the area code is 4. However, the long-distance network also adopts the "multilevel tandem system".

Extended data:

Chinese mainland international area code 86, Beijing area code 0 10, Shanghai area code 02 1 etc. When using domestic long distance calls, dial 0 before the area code. It is worth mentioning that people often confuse concepts and mistakenly think that there is a 0 in front of the area code itself. In other words, because 0 is the only long-distance access code in China, it is often used side by side with the following area code, so it has become a habit.

In fact, when calling back to a domestic city from abroad, the local international long-distance telephone access code is added after the China country number 86, and there is no 0 in front of the city area code. For example, the area code of Chengdu should be 28, not 028.