As he spoke, a lower court in the capital Ankara defied the government by ruling against another, ongoing social media ban, on the video-sharing site YouTube.
Erdogan's government was on Thursday forced to unblock the micro-blogging service Twitter, which has been used to spread a torrent of damaging online leaks alleging corruption in the premier's inner circle.
The Prime Minister made clear he was unhappy about having to comply with the Constitutional Court, which had found the March 20 ban breached the right to free speech, and the rulings of which can't be appealed.
"We are of course bound by the Constitutional Court verdict, but I don't have to respect it," Erdogan defiantly told a press conference. "I don't respect this ruling."
Erdogan said "the Constitutional Court should have rejected" the application to lift the Twitter block brought by an opposition lawmaker and two academics.
"All our national, moral values have been put aside. Insults to a country's prime minister and ministers are all around," he said about the spate of anonymously posted recordings.

The Internet crackdown has sparked protests from Turkey's NATO allies and human rights groups, which have deplored it as curbing the right to free expression -- a notion Erdogan dismissed.
"This is a commercial company which has a product," he said of the San Francisco-based service. "It is not only Twitter. YouTube and Facebook are also commercial companies. It is everyone's free will whether or not to buy their product. This has nothing to do with freedoms."
The Ankara court meanwhile ruled against a March 27 ban on YouTube, which came after the site was used to spread audio recordings of security talks on Syria involving top government, military and spy officials.
The government has challenged such district-level court decisions in the past.
In the leaked recording on Syria, voices could be heard weighing possible military action inside the neighbouring war-torn country.
The Turkish foreign ministry is now moving to ban all cellphones inside its Ankara premises, to prevent further "espionage", a news daily reported.
Erdogan's government has been rattled by the twin crises of mass street protests since last June and, since December, the torrent of online leaks.


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