M66 QuecOpen can not receive SMS by iPhone

IoT Modules GSM Module
1

I am using quecopen for M66. I can receive SMS by Android phones but can’t receive from iPhones.

iphoneSMS
iphoneSMS831×196 20 KB

2

Hi
Please check that the parameters passed into the function are normal. There should be no difference between Android and iPhone text messages

3

Hi,

I can receive SMS from Android successfully. But the IOS problem persists.
Is there any way to debug for your help?