Why can't I send text messages, but I can keep calling?

1. The other party has set up a firewall.

If the number to be sent has a firewall, the message will be rejected. In this case, it will show that the delivery was successful and the receipt failed. Although the other party can't receive it, the SMS fee will still be deducted.

2. Signal problem

Although there will be network coverage in most places now, network instability is inevitable. When the short message can't be sent out, it is likely that the network is not good or there is no coverage. Moving a place or restarting your mobile phone may solve the problem.

Step 3 send in large quantities

There is another situation, that is, I recently sent a large number of short messages, which were judged as advertisements or spam messages, so I was intercepted. In this case, the short message is not sent out, but the other party can't receive it, and it is classified as spam by default.

4. Insufficient memory

Whether it is an outbox or a draft box, if the memory of the mobile phone is full, it may also cause the SMS to be unable to be sent. It's best to clean up short messages regularly.

Extended data:

Common troubleshooting of mobile phones:

Symptoms: The mobile phone can't receive the verification code.

First, the user's own mobile phone number is blocked by the operator.

Such notification messages were complained by operators as spam messages, which led to being blocked by operators.

Solution: You need to contact the operator to solve this problem.

Second, blacklist settings such as SMS security software.

In the past, stricter interception rules were set in mobile phone short messages.

Solution: Check whether there are numbers that do not allow SMS to arrive in interception mode and black-and-white list respectively.

Third, the privacy settings of the internal browser of the mobile phone.

The security level of the browser is too high or the setting to block "third-party Cookie and website data" is set.

Solution: Reset the browser security level or turn off the browser's "Block third-party Cookie" setting.

Their mobile phone text messages have exceeded the maximum limit for one day.

In order to avoid short message bombing and waste of resources, some mobile phones set up a maximum of ten short messages per mobile phone number every day.

Solution: You can't log in to the service that needs to verify your mobile phone on the same day.