Because I send 100 sms to my own phone, and only 8 or 10 arrives. The strange thing is that if I go to the phone company web page (that where you can see your account and your service usage), I can see those 100 sms as sent. I talked with them, but got no answer. They say that if a single sms can reach destination, they do not give support for apps. And I tried with other 2 telepone companys more, and got the same issue.
And they are right, because after I send 100 sms to my own phone, got only 8 or 10 in my phone, and then, I send a single sms with the normal sms utility (from the phone) , and the sms is recived perfect.
It is very strange, and I can´t find out the reason of the issue.
Of course I tried with Send and Send2. But no change. That's why you can see many commented lines, there