OppoA5 can't send short messages but can receive them.

If the used OPPO A5 mobile phone can't send short messages, but can receive short messages normally, it is recommended to insert a friend's SIM card for comparative observation. If the problem still exists, it means the problem is the mobile phone. You can try to call the customer service phone of the communication operator to consult the specific parameters of the customer's SMS settings. (If the mobile phone returns to normal after trying to change the card, it means that it is a problem with the SIM card, and you can bring your ID card to the communication business hall for a replacement card. After the above attempts, the problem still exists. You can take your mobile phone to the OPPO Customer Service Center for free testing. You can quickly find the address and phone number of the OPPO Customer Service Center by the following methods:

1. Enter the OPPO official website-Service-Service Network for inquiry; 2. Enter the OPPO- Home-Recommendation-Service Network.