Iran, UAE top diplomats discuss virus in rare talks
"Just had a very substantive, frank and friendly video conversation with UAE FM" Sheikh Abdullah bin Zayed Al Nahyan, Zarif wrote on Twitter.
"We agreed to continue dialogue on theme of hope - especially as region faces tough challenges, and tougher choices ahead," he added.
According to UAE state news agency WAM, the top diplomats exchanged greetings for the Eid al-Adha Muslim holiday and discussed efforts to control the COVID-19 pandemic in the region.
Bin Zayed emphasised "enhancing international cooperation, solidarity and synergy between all countries" to tackle the virus, WAM said.
The UAE downgraded its relations with Iran in January 2016 amid fierce rivalry between close Emirati ally Saudi Arabia and the Islamic republic.
It came following the storming of Saudi Arabia's embassy in Tehran in response to Riyadh's execution of a prominent Shiite cleric.
Tensions between Tehran and Riyadh and its allies also increased last year following a series of mysterious attacks on tankers in sensitive Gulf waters, with Washington blaming them on Iran. Tehran denied the charges.
Saudi Arabia and Iran, the region's two leading powers, back opposing sides in several conflicts, including in Syria and Yemen.