T-Mobile plans to shake-up the home broadband market by offering an uncapped 3G service of up to 20Mbps for just $15 per month. The company aims to replace landlines altogether for both voice and data, enabling the mobile phone to be the only connectivity device the consumer needs.

T-Mobile's plans involve using HSDPA to ramp up the data transfer rates of its 3G service from the current 384kbps to 1.8Mbps in 2006, and then onto 20Mbps by 2010. Better still, the service is completely open, and is offered at a flat rate of just £8.50 ($15) per month for unlimited use.

T-Mobile have noticed that younger users of phones rely so heavily on their mobiles, they rarely use landlines, except for high speed data access via broadband. Sensing a change in consumer behaviour, T-Mobile are positioning themselves to take advantage of the increasing number of households that are dispensing with landlines altogether. With HSDPA, 3G speeds are more than a match for home broadband connections, and at just £8.50 per month, the total service is actually cheaper than the combined land-line voice and broadband rate charged by the telcos. With this new service, there's no reason to keep a landline, even for high speed data access.

FYI, They have 1Mbps ($55 a month / 10GB limit) available where I live.