The opposite of "technologically advanced" is "technologically backward". This phrase is used to describe the lack of technological progress in a certain area or situation. It is often used to compare one region or country to another and how they measure up in terms of tech advancement. Technologically backward countries and regions are typically less developed and have fewer resources to invest in technology and infrastructure. They tend to lag behind other nations in terms of crucial facets of technology, such as internet access and mobile networks. As a result, people living in these areas may not have access to the same level of services, goods, and information as those in more advanced countries.