I did order one of the plugs and soldered it in and the phone charging does not work. It may have been a poor solder job or something else got shorted in one of the internal circuits. The phone works fine but the battery needs to be charged externally and switched every day or two.
You can get the plug replaced by a shop but one local phone store quoted me a hundred bucks, more than the phone is worth.
If the mini plug in the phone is what is broken then nothing else you plug into it will work. You certainly can try it it and wiggle it around a bit.
In hindsight, I believe I could have saved my plug from going bad. It did not happen overnight and it did not occur to me to check the inside of the plug and check for possible bending of the connectors inside and straighten them up a bit. I did mess with the cable ends a lot, compressing them and such to make a better connection which worked a little but I think it messed up the internal connectors more. Check those internal connectors to be straight and that might help.