Is a wife whose marriage has been solemnized but not consummated considered divorced by a mobile phone message phrased as a supplication, even though the sender did not intend divorce at the time of sending, but had thought about it sometimes?

This message is not considered a divorce, and your wife is still under your marital bond. You must treat her well and be patient with her, for women are deficient in intellect and religion, and a man is commanded to take that into consideration. The Sharia (definition) recommends keeping a woman even if one dislikes her, especially if her affairs are upright, based on the Almighty's saying: "And live with them in kindness. For if you dislike them - perhaps you dislike a thing and Allah makes therein much good." Supplicating against oneself is not permissible.