【DFRobot wireless communication module】SIM test

viphotman

【DFRobot wireless communication module】SIM test [Copy link]

【DFRobot Wireless Communication Module】Review

DFRobot wireless communication module:

http://www.dfrobot.com.cn/goods-1442.html

A6 This module uses a large SIM card, and it took me a long time to find it;

Then I used China Unicom's 4G card to test it, and found that the calling function and text messaging function were not working properly, and the network was also not working properly. Later, I borrowed a colleague's mobile card to use it. I have only tested the SIM card function now.

The following is the situation when no SIM card is inserted:

The following picture shows the situation when the Unicom card is inserted: I tested this card many times, but I couldn't make calls, receive calls, or send text messages. I thought the module was broken.

It was not until later that the test was done with a mobile card that it turned out to be normal;

The following is a Telecom card, which is similar to a Unicom card;

Below is the mobile card,

You can see that there is a response when calling below, not NO ANSWER; the call was not connected;

The mobile card receives an incoming call, hangs up after a while, and displays busy;

Testing the SMS function of A6

The mobile card sent a text message successfully.

The received text message is shown below A1

This content is originally created by viphotman , a user of EEWORLD forum. If you want to reprint or use it for commercial purposes, you need to obtain the author's consent and indicate the source

dcexpert

A6's HTTPGET and HTTPPOST functions used to have bugs, which often caused data loss. I don't know if they have been fixed now.

okhxyyo

Thank you for your hard work~~Thanks for sharing

viphotman

dcexpert posted on 2019-10-22 22:15 A6's HTTPGET and HTTPPOST functions used to have bugs, often losing data. I wonder if they have been fixed now.

My Unicom card can't connect to the network either, and I haven't tried the Mobile card yet;

dcexpert

viphotman posted on 2019-10-23 09:09 My Unicom card can't connect to the network, and I haven't tried the Mobile card yet;

It is probably a limitation of the module itself.

alan000345

Really good post, I like it very much, I will study hard when I have time