Telecoms firm Eir has unveiled a new Irish mobile network.

The company says GoMo will be "Ireland's first truly digital mobile brand".

It says all calls, texts and data will cost €9.99 a month for life for the first 100,000 customers.

There is no long term contract - as customers sign up for a rolling 30-day plan.

The company gives customers the option of keeping their existing mobile number, or getting a new one.

However there is a one-off €10 connection charge, and a fair usage policy applies to the unlimited data.

File photo shows the Eir logo at the company's head office in Heuston South Quarter, Dublin | Image: Brian Lawless/PA Archive/PA Images

Operating on Eir's mobile network, GoMo customers will have 99% population coverage and over 97% 4G coverage.

Customers can visit its website, fill in their details and a SIM card will be delivered by courier to any address.

Its customer support will be handled by a dedicated webchat team, based in Limerick.

Eir says it is investing over €150m in the upgrade all its existing masts with the latest 4G network technology, and increasing its 4G footprint by 25% - which it says will deliver even faster data speeds.

It says customers will also benefit when going on holidays, as users can roam like home all over Europe - and the UK.

While Eir Mobile will continue to operate as its own brand.

GoMo joins Three and Vodafone in the Irish mobile market.

A number of other providers - such as Lycamobile, Tesco Mobile and Virgin Mobile - use one of these main networks to provide their customers with phone service.