It is understood Ainslie has agreed to join Nokia at the end of July. Wolontis who has held the position of managing director since February 2004 and been with Nokia for over 12 years will take a senior European role within Nokia.
Nokia and T-Mobile declined to comment on the move but speculation last week suggested that T-Mobile UK managing director Jim Hyde might look to the US to replace Ainslie.
Terry Hayes vice-president of indirect sales and operations at T-Mobiles US business and a former colleague of Hydes has been tipped as a possible replacement.
Former Orange UK sales director Stuart Henry counted himself out of the running but admitted he might return to the mobile phone industry. Henry has been on sabbatical for six weeks following a stint at experience company Red Letter Days. He has been tipped for a role at The Carphone Warehouse but refused to comment.

The Internet domain is intended to create web sites specifically for viewing over mobile handsets. To use the .mobi domain companies must satisfy the registrar that their site is compatible with as many handsets as possible. So far 4000 companies have registered .mobi sites.
Top brands include easyGroup Virgin Mobile all five terrestrial channels BSkyB EMI Marie Claire and M&S.
To prevent cybersquatters only trademarked companies can apply for a .mobi domain until August 21. After this the registration process will be open to a general landrush´.

The proposal is outlined in a letter to shareholders and is thought to have angered many key investors who have been disappointed with the company´s performance.
Vodafone refused to comment however and said full details would be published in the company´s annual report in mid-June.
See Business Watch page 16

Scottish dealership Telepoint International last week contacted mobile phone dealers across the country to propose the formation of a new independent dealers association. Telepoint director James Hinchley who has employed two extra staff to canvass dealers said he had received positive responses from more than 200 mobile phone retailers in less than a week.
Hinchley said: "Many small dealers trying to influence the policies of the main networks separately is futile. We want to set up an association of independent retailers whose united voice will carry a lot more weight. We have to ask ourselves are the days of the small independent dealer numbered? The answer is yes if we dont stand together to be counted."
Hinchley believes the networks are poaching customers from independent dealers and will erode dealers customer databases to the point that they are worthless if action is not taken. 3 is now contacting customers two months before their contracts expire and upgrading them direct he said.
In a letter to retailers Hinchley said: "Loyalty is a one-way street. Sure this is a cut-throat business but avoiding paying commission and creating clawback charges by pinching customers from small retailers is immoral and despicable.
"We propose to form an Association of Independent Mobile Dealers to convey our grievances to the networks and demand an end to their dirty practices. With sufficient support the trump card we hold is the threat to boycott networks that dont play fair."

Hurring who has been at the company for more than 15 years is said to be leaving because of management differences with Kyle Whitehill Vodafone UKs enterprise business unit director according to sources close to the situation.
A Vodafone spokeswoman denied reports of strife in the department however. She said: "Richard Hurring is leaving the company because he has been offered a job with creative technical agency Marvellous Mobile."
His departure follows the surprise exit of Vodafone director of enterprise sales Chris Huggett last month who was also believed to have clashed with Whitehill.
Hurrings departure follows a long list of high-profile exits from the company over the past 12 months.
Marketing manager Peter Bamford left the company in March and finance director Ken Hydon left last year. Other notable departures include senior manager for business partnerships Jason Rigby and head of dealer sales Iain Graham.
With the retirement of Sir Julian Horn-Smith and Lord Ian MacLaurin from the board in July there are few of Sir Christopher Gents "Newbury boys" left at the company.
Gent who oversaw the firms rapid expansion in the 1980s and 1990s also symbolically severed all ties with Vodafone in March by stepping down as president for life after he reportedly disagreed with CEO Arun Sarins management policy.
Hurrings departure at Vodafone will further fuel rumours of unrest at the company as it tries to regain the confidence of its investors. This follows a rocky few months for the company that included the sale of Vodafone Japan in March.

The first three fights available will be Eubank´s match with Benn in 1990 Storey in 1994 and Godoy in 1995.
Pricing varies from £1.50 to £10. Payment solutions are powered by Activefone and processed by Bango.

Existing Vonage customers can make free calls using a WiFi phone whenever they are in within range of a hotspot including all major airports First Great Western rail stations and more than 4000 pubs and regional hotels across the country.
"Enabling users to make telephone calls while on the move is the inevitable next stage of the VoIP revolution" said Vonage UK managing director Kerry Ritz.
Calls will be included in Vonage´s standard £7.99 a month "Residential Unlimited" package which includes unlimited calls to UK and Irish landlines as well as other Vonage customers worldwide. Users will need to buy a WiFi phone.
The Cloud COO Bobby Sarin added: "We believe it will lead to a huge growth in the VoIP market."

Field´s role will involve O2´s content strategy across all platforms including O2 active i-mode and Visual Radio.
In a statement O2 said her focus would be on driving music strategy as well as taking advantage of content from The O2 music venue which is due to launch next year.
O2 marketing director Russ Shaw commented: "New content remains key for our customers and Tanya will help maintain O2´s momentum in this field."
He added: "She brings to O2 a strong and extremely diverse background in content development and her experience in television will help us to continue to develop compelling content.
"Her knowledge will ensure O2´s customers continue to have access to exciting and engaging content."

Disney Mobile will use the O2 network. The service will target eight-14 year olds and will offer Disney-branded handsets with restricted calling and Internet access within parameters set by parents.
Disney Mobile will be responsible for all aspects of the service including product development distribution marketing customer relations billing and other business operations.
"Parents are looking for a responsible service provided by a trusted brand" said Walt Disney Internet Group Europe managing director Attila Gazdag. "Disney Mobile will build on Disney´s reputation for quality in the family market to create an engaging and dependable mobile experience."
Around 64 per cent of children aged 10 to 15 in the UK now own a mobile phone.
John Carr new technology adviser for children´s charity NCH said: "This is an innovative service that will help both parents and children use mobile phones with greater confidence."
Ovum senior analyst Carrie Pawsey said: "This is a good example of a mobile operator using an MVNO as a segmentation tool."

A survey of 2000 people conducted by Phonesafe mobile phone insurance supplier CPP has revealed that 15 per cent of UK mobile phone users have even imitated the sound of going through a tunnel in order to escape from an unwanted caller.
Phonesafe head Peter Hall said: "It seems there is a double-edged sword when it comes to mobile communications. Mobile phones have made communications easier but they have also allowed us to have more control over who we choose not to communicate with."
See White Lines page 56