Need new phone

[Gray]

My phone is in pretty bad shape and I could really use a new one.
My casing is shattered for my extended battery, my original battery is overheating and has started to bulge, using it results in screen flickers, random freezes and reboots, missing applications and SD card failure.

I unfortunately don't have much money so I can't really get a newer phone, so I'm asking if someone has a spare phone they're not using anymore that I could buy off of them that's still in good condition. I would prefer not trading down from this as I'm already far behind on the generation scale, it's an s3.

The reason why I'm asking here is I know a lot of people have been SEing on here and there may be a surplus.