O2 has told customers it will end support for its digital wallet just 18 months after launch.
"When we launched the O2 Wallet 18 months ago we were one of the first mobile wallets around. Since then lots has changed for us, the market and our customers," the company said.
"So, we've decided to close the O2 Wallet to give us time to look into new and better ways to help people manage their money on the move, both in the UK and abroad."
The digital wallet, launched in 2012, enabled subscribers to make payments of up to £500 to other users of the smartphone app. The prepaid system, open to customers of any mobile operator, also supported transaction with a number of online retailers.
Subscribers are now being told to use funds remaining in digital wallets before the deadline, or balances will returned to bank accounts or via cheque.
The decision to end the O2 service was down to changes within the "financial services sector and also within Telefnica", the company said.
For example, O2 last year announced a venture with rival operators EE and Vodafone to jointly develop a new m-commerce platform, Weve. Telefonica also announced a multi-year deal with software provider Monitise to develop "a global technology platform to support payment and mobile commerce services".
A spokesperson confirmed that the company will now be "re-investing in other m-commerce opportunities" across the organisation.
Telefnica declined to provide user figures for the platform, and did not comment on whether slow uptake was a contributing factor in the decision to end support wallet.
The launch of the O2 Wallet followed the introduction of similar services from the likes of Barclays, which also launched its Pingit person to person payments service in 2012.
The digital payments marketplace has since become more crowded, with a number of mobile payment services either already on the market, or preparing to launch, such as the Vocalink-backed Zapp platform.
But while the use of mobile payments is set to increase this year, Peter Roe, financial services analyst at TechMarketView, said that other mobile operators entering the market will struggle to gain a foothold as more traditional players, such as banks, begin to offer their own services.
"We have been rather sceptical of the efforts of mobile operators to build a successful mobile payments business in developed economies where competition is fierce and the fact that O2 are withdrawing this service without announcing an immediate replacement reinforces this view," he said.
He added that it is likely that Telefonica will return with new mobile wallet and m-commerce offerings this year based on its partnership with Monitise, but will come up against even more opposition from a range of competitors.
"Over the next 12 months we can expect a host of new mobile payments and m-commerce services from an array of vendors as smartphone penetration grows and as financial services companies and retailers use the mobile channel to offer more personalised services," he said.
"Usage levels are certain to increase but we should also expect that a large proportion of these offerings will 'crash and burn' as companies compete for the valuable real estate that is your smartphone's screen."