AT&T confirmed to Phonescoop that it has raised the cost of activating a new line of service and upgrading an existing line from $20 to $25. The increase is effective today, according to AT&T. The increase was first reported by Droid-Life. AT&T's move follows closely a similar increase made by Verizon, which bumped activation fees from $20 to $30. Activation fees are largely seen as a way for carriers to pad profits.