Here are the most important things to fake a SMS summarized. Please read the following to make sure it works. Let's start with the tutorial.
Sender and Recipient shouldn't be the same. This can lead to problems with the delivery.
Avoid same SMS to the same recipient in a short time. These will be marked as spam and may not be delivered.
It is best that your fake sender has a valid number in the international format. Partly it comes to problems if you put only false SMS sender names as fake sender. If you set your fake number manually, please pay attention to the correct international spelling.
Please double check the recipients number. Fake SMS messages can only be delivered on real existing numbers. Also pay attention to set the right country.
Sorry, that is not possible. If the recipient reply to your fake SMS message, the sender you set will get the answer.
Flash SMS allows you (in most cases) to send full screen real text messages (SMS). A good way to have amazing fun with your contacts. Flash SMS messages are handled differently regarding recipient operator and smartphone. So in most cases a fake Flash-SMS will be: