Android Is it smart if I swap my Iqoo z9x for a ROG 3 phone???

Popsicleed

Disciple
Title. Also the seller mentioned that the sound calibrator is broken so any sound can't come off (My plan is to exchange my Iqoo z9x with that phone plus ask for some more money so I can replace the back)
Also he's selling it for 10k
The picture attached is the state of the phone.
I don't know how to edit a TE post on mobile so I'll just say it here,
My phone has been used only for around 3 months with no scratches at all. (Also w/ warranty)
 

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I'd highly advise against it. The phone looks like it's been through hell. Also, you have no idea what the condition of the internal components is. Also, it's a 4-year-old model. Battery integrity will be questionable. You'll be on the losing end of the deal.