Iran → Slovakia
Iran plugs
Type C
Type FSlovakia plugs
Type C
Type EShared plug type: C
Compatibility: Compatible
Voltage — Iran 230V — Slovakia 230V
Voltage is the same. Your devices should work normally.
Device compatibility (phones)
Phones almost always support 100–240V, so yours should work safely. Check your charger label to confirm.
You likely only need a plug adapter (if socket shapes differ). Voltage is close between these countries.