Satnavs require GPS receivers which are inbuilt to a lot of smart phones. You need to check if the tablet has a GPS receiver.
TomTom do a Satnav App where the maps can be downloaded to your own device so you don't necessarily need a cellular phone or wi-fi to operate while on the move. You would need one of these functions (or a connection to a PC) to get the App and map on the device in the first place. You may need a cellular network connection if you want real time traffic updates that can automatically alter your routing to avoid traffic jams or accident road closures.
(Other SatNav Apps are available which may operate in the same/similar way)
Many cars now come with their own build in Satnavs with the full maps installed in the cars memory.
Have used a tablet (wifi,not cellular) in the past, there are apps that let you download the maps. TBH these days I use Google Maps on the phone, the voice commands are usually all you need. Plus you get real time updates on traffic conditions, although not always reliable. I was incorrectly detoured off M5 the other day, from their misreading of either an M50 or an M4 closure.
I can understand that, but you can get some pretty big phones screen wise, I'm not sure if using a phone as a hotspot will give accurate enough tablet positioning info.
Use the voice on the smart phone. I can even do it for walking navigation. otherwise then you can normally update maps when you are on your wifi, assuming your car or phone does not already have a hotspot for such things. Brian
you download offline maps for the areas that you visit
I just use Google maps. Which will likely be pre-installed on the device
But some of the functionally doesn't work in offline mode, so you may prefer an alternative
one tip - if running from the internal battery, if you put it into screen saver mode you will still get the announcements, and the battery lasts longer
I have been using Here we go for years - on Android and IOS phones.
Finding the phone screen a bit small, I bought a Samsung tablet (Galaxy Tab A (8.0", 2019) - with LTE). And use that.
By getting LTE it doesn't need to use the hotspot on my phone and it gets a GPS chip. I bought a Three PAYG SIM so could even use the Tab as a phone.
The data usage during normal use is small and it switches to wifi at home - and many other places.
It is also quite nice to use for other purposes - even as mundane as a bit of browsing at a services.
Battery easily lasts long enough for every journey I have made since getting it.
In my car, it can lie between gearstick and cigar lighter socket. Has Bluetooth so I can choose whether or not to get audio through the car's audio or directly on the Tab.
Am well aware it is a relatively expensive approach but I did get a good price on the Tab.
Yes, excellent in my experience, it's my standard SatNav program. It allows you to download maps for large areas (e.g. in my case I have the whole of the UK and Western Europe) and then runs wholly 'offline' (i.e. without using any data).
They also update quite regularly. Where I live appeared quite quickly (new-build house) - still not arrived on quite a number of satnavs.
(I actually went for Here because at the time I had three phones - IOS, Android and Windows. And it was the only, or just about the only, one that was available for all three. I hate using multiple different products if avoidable - it just confuses. Now I use IOS phone and Anroid tablet - similar enough.)
I use a 10 inch tablet as sat nav, co-pilot has downloadable maps and works well (free limited time trial available) I use a 4g tablet with a sim card, then you get re-routing etc. It is now only 5 pounds a month for enough data for my needs plus unlimited calls and texts. The tablet was only 42 quid from china on ebay. add on a obd2 reader and you can have all the fun of using torque to analyse you car as well.
The better ones have features which the general map apps lack, eg junction view etc, which is extremely useful- especially when driving overseas where they seem to take delight in having junctions which resemble plates of spaghetti.
Some also allow to but in vehicle details so you can avoid low bridges, weight limits etc.
Conversely, Google is good for homing in on places without a detailed address etc or viewing the approach so you can preplan the final details.
Mostly works. And the built in system on my car includes the option of having an arrow and hour glass display at the bottom of the rev counter (where you can also get all the other OBC type things). As you approach a turn off etc, not only do you get a verbal warning, but the hour glass starts filling, and you take the turn when it's full. Hardly ever have to shift your view to the sat nav display.
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