For the past few months I get a problem with the card "loosing the simcard" suddenly, I can't reproduce it, I think it might be some contact in the phone as it happens mostly when I walk with the phone in my pocket. The phone suddenly searches for a network, doesn't find - and then SIM card missing. I triede this with different sims and no go
I opened it up, tried to press things together and also put some contact cleaner...
Does anyone have experience with such a problem? can point me where to check on the PCB?