T-Mobile has launched new tariff options that give customers a fixed data allowance when they’re using a smartphone or mobile broadband device abroad. When the allowance is used, the data connection will stop and customers will be unable to run up any additional costs.

The smartphone options are called ‘Internet Travel Boosters’ while the options for mobile broadband devices are called ‘Broadband Travel Boosters’.

Three UK is the latest company to introduce a new European roaming deal, hot on the heels of Vodafone’s announcement earlier this week.

It’s called the Euro Internet Pass and it allows unlimited mobile data use when in the EU for £5 per day.

Vodafone UK has launched a new tariff option called EuroTraveller that allows customers to use their UK tariff allowances whilst in Europe, cutting the price of ‘roaming’ abroad.

Opting in to a £3 daily charge lets consumers on a ‘pay monthly’ price plan use their UK voice, text and mobile internet allowance when abroad. Calls and texts received whilst in Vodafone’s Europe Zone are free; additional ‘out of bundle’ charges are the same as in the UK.

Mark Bridge writes:

The idea of a free mobile phone network is a dream for many consumers – and potentially a nightmare for traditional mobile operators. Most notably we saw Blyk launch an ad-funded network in the UK five years ago, with the MVNO closing in 2009 as the company’s business model changed.

In this week’s podcast feature I’ve been talking to someone who’s just launched a brand new mobile service that’s giving away calls, text messages and data in return for advertising. The company is Ovivo Mobile, it launched last month and it’s currently targeting students to sign up.

O2 UK has created a new international roaming deal for customers with a ‘pay monthly’ contract. O2 Travel will launch in July 2012, providing customers with fixed charges when they travel in Europe.

Voice calls will use minutes from the customer’s standard tariff allowance with a one-off 50p charge per call. Data usage will be charged at 25MB per day for £1.99.