Hello.
Is this familiar error to you?
I think settings (P# set , IP Protocol = SMS, latest firmware 11411 ect....) are correct..
paste mode; Ctrl-C to cancel, Ctrl-D to finish
1=== import network
2=== c = network.Cellular()
3=== c.isconnected()
4=== c.sms_send("phonenumber", "testi")
5===
True
Traceback (most recent call last):
File "<stdin>", line 4, in <module>
OSError: [Errno 7005] EIO