Anyone have any experience opening up the Jolla1?

I can't send or recieve calls anymore but the sim seems to be detected so it looks like a hardware fault with the transmitter

I want to peek inside to see if anything obvious has been rattled and needs resoldering, but I don't know what I'd be looking for.

The warranty has long run out so I don't know if Zendesk will fix it. Do they fix it for money? I'm happy to do that too.

Jolla doesn't repair phones by themself.
They have or had agreement with mobylife.fi
Here you have a contact mail huolto@mobylife.fi.
I don't know how old yours Jolla is but this company wrote me that Jolla phone has 2 years warranty.
"If the phone hasn't suffer any physical or liquid damage and it's less> than 2 years old we can provide the service into Jolla's warranty. If its> not a warranty case we would do price estimate for the service."

I hope it will be helpful for you.

Thanks, I'll contact them right away!