The iPhone X, pronounced 'iPhone ten', is in high demand for its larger edge-to-edge 5.8-inch screen and its facial recognition technology, despite its €1,179 price.
It is estimated to be holding back sales of Apple's other new handset, the iPhone 8, with many consumers holding out for Apple's top device.
The phone is available to buy upfront on Apple's Irish web store. The device costs €1,179 for the 64GB version or €1,349 for the 256GB version, a new high for a mainstream smartphone.
Irish mobile operators are offering different deals on the 64GB edition of the iPhone X. Virgin Mobile is offering the iPhone X for €499 with a contract for €60 per month over two years.
Eir, formerly known as Meteor, is selling the phone for €649 upfront with a €55-per-month tariff. Vodafone is selling the device for €299 upfront for people willing to pay €80 per month as a tariff.
The country's largest operator also has a €60-a-month plan with a €599 upfront price. Meanwhile, Three has a €569 upfront price and €60-a-month for two years.
Not all iPhones are experiencing delays in delivery. The iPhone 8, which is less than half the upfront price with similar or lower monthly bill pay tariffs on operators, appears to be in plentiful supply.
The phone's facial recognition abilities can also be used for new 'animoji', animated emoji that closely mimic a user's facial expressions and which can be used within iMessage.