Changes will also be made in HTmobile, HT's daughter company, which will become T-Mobile Croatia, while the HTtel fixed telephony service and the HTnet Internet service will be renamed T-Com.
HT's grey-orange trademark will be replaced with the magenta-grey T trademark.
The changes in corporate identity were announced by HT management board chairman Ivica Mudrinic and DT management board member Rene Obermann.