To put it simply, istg ️ in text stands for... Believe me ️, the meaning of istg ️ in text is... With sincerity ️, the intention behind istg ️ in text is... Straight from the heart ️, the connotation of istg ️ in text is...
When you receive a text with istg ️, it often signifies... undeniable conviction in other words I'm telling the truth and I'm genuinely committed to my statement . This implies that when someone writes istg ️ in a text, they are vouching for the truthfulness of their statement and want to assure you of their sincerity.
In addition, istg ️ can also be interpreted as I swear to God in text messages. It is essentially a stronger expression of assurance. When someone uses istg ️ in a text, it demonstrates their unshakeable belief in what they are saying. To wrap it up, when you come across istg ️ in a text message, you can interpret it as the person's way of convincing you that their words are genuine and should be trusted.

ISTG Meaning and Use Cases in Text Social App AirDroid