have i borked my phone?

[tech-wreck]

a while back i bought a used phone off ebay, a nokia 5800. it was cheap, the case was a bit battered and scratched, but it was for me to use at work. it did everything i needed and i didn't have to worry about it getting trashed. then about a month ago while out and about in the work van, the phone battery died, shortly after the van broke down. no charger on me either. the office number was on my phone. i was stuck, 200 miles from home.

after a rummage in the glovebox i found an ancient sat-nav charger, the usb plug was rusted but the light on the cigar lighter plug worked. i bit off the rusty plug and bared the wires, wrapped the +5v and gnd around the battery terminals and held them in place with the flat battery. held in the power button and ... BZZZT! yes! managed to phone the office, they called the AA, i was saved!

since then, and with increasing frequency, my phone will restart, switch off, forget there is a sim card in, drop the wifi connection, freeze up, fade to black or generally do a fail.

i think putting 5v (or more, it didn't look like a quality car charger, or like it had been looked after) through my phone's 3.7v rated input may have fried it a bit.

what do you think?

 

[tech-wreck]

update: my phone still works, the battery connections needed tightening up

also, i dropped it in the toilet yesterday, mid-stream. it was in there a good thirty seconds while i finished... and only turned off when i pulled the battery out when rinsing under the tap. shook it off, put the battery back and it turned on, although it had factory-reset itself, seemed okay apart from the digitiser glitching.

24 hours after it's 'golden bath', it's dried out and working perfectly.

meh. it's a nokia, what was i worried about?