The other standard App is Smartphone Link, which currently operates exclusively via an Android phone. We first experienced this with the Garmin nuvi 3590. Once you have downloaded the app for your phone and paired it with the sat-nav via Bluetooth, a selection of new options appear in the Apps menu.
Unlike the map updates and traffic, most of these are not free. Those that are include a six-day weather forecast, and the Tracker, which lets your friends on Facebook and followers on Twitter know where you are, making cyber-stalking a doddle. All the other options require a subscription, most of which cost £8.45 a year, although the enhanced 3D Live Traffic (Garmin's direct competitor to TomTom HD Traffic) is £19.99. The other options include photoLive, which lets you see the view from traffic cameras, and Fuel Prices, where you can peruse live petrol cost information.
Regular drivers will appreciate the live space availability and pricing for nearby parking garages, safety camera location updates and (perhaps less useful) advanced weather information, including severe weather warnings and radar images. However, all these services together cost over £60 a year. Worth it if you you're on the road everyday of the week, but a bit much otherwise.
So the Live Services are more expensive than TomTom's, but otherwise the 2598 is a very capable sat-nav. It turns off and on really quickly. Route calculation uses Garmin's trafficTrends, so time estimations are pretty accurate unless you hit unexpected gridlock. Although the underlying map screen doesn't look significantly different to previous Garmin sat-navs, it has gained some useful new onscreen widgets.
Unless you have received a traffic notification, the right-hand side of the screen hosts three icons which Garmin calls Up Ahead. By default, these show you how far the nearest petrol station, roadside service and restaurant are. You can simply click on an icon and choose to reroute your journey to one of the POIs that appears listed. This is a very useful feature, particularly if you're travelling with kids who suddenly decide they need a toilet stop or have become miraculously ravenous, despite you asking them if they needed either five minutes earlier before setting off.
Safety camera information appears at the top in a strip that moves across the current next turning description.
This is also a sat-nav with Garmin's excellent Voice Command system, which we have commented on the effectiveness of before, for example with the nuvi 3790T. By default, you call up the system by saying "Voice Command", although you can customise this to any phrase you like.
You can then set up a destination entirely verbally, including finding addresses or points of interest, or a location from your History. However, you can't directly access the Up Ahead widgets. You will need to go via the standard POI category system instead. But overall this is still the most effective voice command systems around, offering true hands-free operation.
The Garmin nuvi 2598 LMT-D is a capable mid-range sat-nav. Its traffic updates are a cut above the average RDS-TMC offering, although not as good as Garmin's premium 3D Live Traffic or TomTom's HD Traffic, and the lifetime European map updates included in the price are a major value bonus. The redesigned navigation view with detailed traffic updates and quick-access icons for select POIs also add to the utility, and the Voice Command system is excellent, making this a great general-purpose sat nav.