IPhone 3GS can't sustain Wi-Fi connection for a long time, any remedy?

IPhone 3GS can't sustain Wi-Fi connection for a long time, any remedy?

Heres the solution:

BUY A MORE UPDATED IPHONE…

there you go.

Here's another solution
DON't BUY AN IPHONE
I think that's more reasonable.

Otherwise, have you tried to turn it off ( literally off, not just turn off the screen) and back on?
It used to work for me for most problems.
You can try resetting the router if this happens on other devices too. I'm not sure what else to say. Drink plenty of fluids?

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