So my "good" dualshock 3 is not very "good" anymore.After 3 years of gaming it finally broke down.

So I'm 1 year away from buying a ps4. When I do eventually buy a ps4 I will defenately buy a second controller for couch coop.

So I was thinking, instead of buying a dualshock 3 for the ps3, is it a good idead to buy a dualshock 4 a year earlier and use it for the ps3 during this year?

Does it support every game? Does anybody use a DS4 on ps3.What problems have you faced?

note: after buying a ps4 I'm NOT selling the ps3 or anything. There are plenty of games on ps3 that I will want to play or replay in the future, so it's not like a DS3 would not be worth it.I'm just asking if a DS4 works just as well on ps3 as a DS3.

What do you suggets?

It works with nearly every game

BUT I believe you have to keep the controller plugged into the console at all times

Have you used it? I think I've read somewhere that it can be used wirelessly but the ps button doesn't work.

Still I ask people here because I'd rather here someone's actual experience with the DS4

I didn't tried the DS4 on my PS3 yet, but it has compatibility issues. The rumble and sixaxis functions won't work. Specifically the later is required by some games. Titles with more restrict requirements of controller, like both Gran Turismo games, won't work too. 

I think the compatibility is good enough to use the DS4 as second joystick (that's why I didn't tried, I have 2 DS3), but that's it. I only fiddled with controller options on the PS4 since I only have 1 DS4 and the DS3 don't have a touchpad to be compatible with the PS4 and I just ended using the Vita as a controller (works like a charm).

So my advice is buy a DS3.

It have compatibility issues.

And it works via Bluethooth.

I have done this. I bought a DS4 to replace a DS3 about 2 months before I got a PS4.

Works well, and wirelessly, see here:

http://www.eurogamer.net/articles/2014-07-02-how-to-use-a-dualshock-4-wirelessly-with-a-ps3

The things I noticed mainly were that the PS button doesn't quite work and with no light indicator, you sometimes can't tell which controller port it's set to. It was set to 3 for me once, didn't realise until I switch controllers a few times. If you can get one cheap enough and in prep for one day getting a PS4 it may be worth it.

Oh cool! I missed that update. My PS3 is going to be dusted off soon for KH II.5 and I actually have another DS4 in the post for my PC mostly. But this should make things easier!

I Played Ultra Street Fighter on my PS3 using my DS4 before I sold my PS3. It worked fine, you plug it by USB, and it works instantly. I'm not sure what games it does and doesn't work for, I'm not sure about the compatibility between the share button being used as the select button. And obviously no touchpad functionality. But form my experience it works, only pain is that the ps button doesn't work, so to quit your games if you ONLY have DS4 you have to turn off your PS3. 

Thanks people

I've made up my mind.
I'm getting a DS3