Internet service provider O2 has cut the price of its pre-pay mobile broadband dongle in half for a limited period.

Between now and Monday August 3rd, customers looking to purchase a Pay & Go USB modem device can do so for £14.67, down from the usual £29.35.

People using the pre-pay mobile broadband service do not need to worry about signing up to a long-term contract.

Instead, they can sign up for 500MB of daily access for £2; 1GB of access over a week for £7.50 or 3GB over seven days for £15.

Furthermore, all three dongles include unlimited free wireless internet usage for laptop broadband users when they are situated in one of BT's Wi-Fi hotspot zones.

Earlier this month, O2 launched an "amnesty" campaign to encourage people to try out its Pay & Go mobile broadband dongles.

Until tomorrow (July 30th), people in Manchester will be able to swap their current network's pre-pay mobile broadband dongle for the O2 alternative, without having to pay anything.