Originally Posted by ivanzorkic

Yes, GSM will activate 2/2.5G, 3G will, ofc, be 3G and Dual will use 3G when possible but allow 2.5G where 3G coverage is bad.

3G has faster Internet and won't disconnect from it while using the phone (both voice calls and SMS send/recieve will disconnect from gprs net temporarily)

2G/2.5G uses GPRS/EDGE for Internet which is slower and, yea, Youtube will be almost unusable (and some heavier websites too, - i.e. on 2.5G waiting for Gmail in browser to load in full mode is a pain), SMS and phonecalls will disconnect you from the net (and auto reconnect afterwards)

So use the 2.5G instead of 3G because of the slower battery drain. IM programs work great on 2G and it won't eat your battery so fast (you can go full day being always online) - so you're always connected. I don't even use SMS anymore. You can also view lighter websites (talk.maemo.org, for example, works just fine) - and switch to 3G when you need the speed (or use Wi-Fi)

Originally Posted by gohan2091

2G and 3G are only relevant for a phone right? Wi-Fi is internet via a wireless router? I only use Internet via wireless router in my home. If I were to travel, I wouldn't use the Internet on my phone. Because of this, I can leave it on GSM all the time and still have fast Internet?

Originally Posted by ivanzorkic

Well, you should use GSM (instead of 3G/Dual) while traveling to keep your battery alive, but you'll probably get a slow Internet experience. Still, its better than having a dead phone without a power outlet nearby, right? And if you need faster Internet speed, just switch to 3G and back when you don't need it anymore.

As for the wireless routers, I disagree - there are many situations outside your home where Wi-Fi can be useful. Where I live there are lot of free Wi-Fi hotspots one can use. Pass next to a school? Have a drink in a coffee-shop? Spend your time in the faculty campus? Even our Danube beach has good Wi-Fi coverage.

Your N900 can save these spots the first time you use them, so it can switch from 2G/3G to Wi-Fi automatically whenever you're within reach (with the default settings, Wi-Fi "wakes up" every 10 minutes - and you can change this interval - to check if there are any available connections - so spend some time at a location which has Wi-Fi and N900 will switch to it). So why use a slower 2G or battery-draining 3G (and even 3G is slower, depending on the net speed provided by the hotspot) when you can enjoy a good Wi-Fi without any big hassle of connecting to it?

Also, while we're on the whole Wi-Fi subject - I often use my N900 even while at home. You can't lie comfortably in your bed and read email with a desktop (or laptop/netbook for that matter) can you?

That doesn't mean 2G/3G isn't important, it is. And I wish 3G wouldn't drain the battery so much.

Originally Posted by shadowjk

You are correct.

Originally Posted by shadowjk

Depends on your AP. Some don't support powersaving mode very well, and will cause your n900 to eat so much power it gets warm and lasts 4 hours or less.

With a non-buggy AP though, the n900 will idle for days with wifi active (assuming nothing else consuming excessive power, of course).