OwnFone has launched a mobile phone aimed at children of ages 4 and up, Digital Spy said.

The 1stFone features a simplistic user interface and does not allow users to perform and function besides making and receiving calls.

The product's developers insist that the device is intended as a risk-free means of introducing minors to the world of mobile phones.

"It's up to the parent at what age they feel their child needs to be contactable, we just want to ensure when that time comes, there's a product that minimises usage and poses no threat or danger to their safety," said Thomas Sunderland, founder of OwnFone.

However, the 1stFone's launch has been met with criticism from childcare experts, who have dismissed it as a means of making money out of children and their parents, MSN reports.

The 1stFone will be made to order in the UK with a price tag of around £55.