Why can't letv send text messages?

See if there is any problem with the number of the SMS center in the SMS settings. You can call the operator's customer service phone to inquire about the phone number of the local SMS center, or you can inquire online.

1. Insert the SIM card, I can make phone calls and receive short messages, but I just can't send short messages. I know the number of the SMS center must be set, so call 10086 (don't search online to avoid mistakes). The number of my local SMS center is +86 1380055 158. It's the first time to use an Android phone, so based on my previous mobile phone experience, I found a place to configure the SMS center number in the mobile phone settings and SMS settings, but I couldn't find it anyway! So I searched the Internet and found that the mobile phone of Android system should set the SMS center number in engineering mode. Specifically, I entered: *#*#4636#*#* in the telephone dialing interface, as shown in the figure (note: there is a * missing in the figure below).

2. Then the engineering interface appears.

3. Select the mobile phone information and find SMCC below.

At this time, you should pay attention. Just enter +86 1380055 1500, and then press "update", you will be prompted: update error, which is obviously not acceptable. You need to convert the SMS center number to PDU format before entering it, and then press "Update". How to convert SMS center number into PDU format? Go to this website: www.twit88.com/home/utility/sms-pdu-encode-decode, and find this interface at the bottom of the page.

5. Enter your SMS center number in the SMSC box, and then click the conversion below. The PDU format will be generated in the box on the right, and then take the first 18 bits. For example, the PDU format of my SMS center number is 0891683108501505f0, and then put this 18.

If all the numbers are correct, the SMS will definitely be sent normally! The above are some methods for setting the number of SMS center, which are very simple and applicable not only to this model, but also to other models. If you can't send a text message, everyone can try.