Wechat applet store can't send a message

The voice sent by WeChat applet cannot be sent out, which may be due to the following reasons. First, improper operation. When wechat sends voice, be sure to hold down your hand. During the speech, you must not loosen the recording button in the middle below, otherwise the sound will not be recorded at all. When you say what you want to say, let go of your hand, and what you say will naturally be sent to the other party's WeChat. Second, the phone's memory is full. At present, there are many things in the mobile phone, which will take up a lot of storage space when browsing the APP or web page. There is no way to send voice when the storage space is insufficient. This situation must be cleaned up in time, leaving the memory cache and unused software in the mobile phone to the mobile phone.