LG V20 can't read SIM after rebooting

[magikoral]

I just got a new (used) phone off eBay, it's an LG V20 LS997 that was originally on the Sprint network and has been unlocked and switched over the Cricket network. I got the phone on Friday (03/30) and I got it switched over that day and it worked fine until yesterday (04/01) when, after the battery died and it recharged, said there was no SIM card inserted. I checked the SIM and it was inserted properly. I Restarted the phone several times, tried to clean the SIM card and the slot with a microfiber cloth, and I tried basically all of the suggestions I found online. The only thing that fixed the problem was to do a factory data reset, which worked for several hours, then it did it again the same night, then again this morning. Last night and this morning however it wouldn't let me onto the Internet and I tried to restart my phone, and when it came back on it said there was no SIM card inserted, just as it had before.

This is an older SIM card that was out of another BYOP I had on Cricket prior to this one (It was an LG G5).

Could this be a hardware issue on the phone itself, or could it be the SIM card might have been damaged? It did work for almost 2 days before the issue started. It is also a Spring phone (with a GSM slot) on an AT&T network, so I don't know if that would cause it do this or not.

 

[Napalm]

I know this will be a pain but few simple bits.

First things first - no sim in device - boot up and be at home on your home wifi. It should allow untethered use - on wifi. should be able to load apps - surf and use apps. of course no phone calls or text messages and you should have some persistent notice of no sim card.

Then - old sim card in older phone or other phone - does that sim card actually work correctly and consistently.

If the V20 works fine without the sim card in it - and the sim card works fine in another phone. I'd say your v20 had a wonky sim reader and it might actually be damaged. which might be why it was sent back and you were able to buy it.

If the V20 keeps acting wonky without the simcard in play - I might be broken.

Finally you get the idea - sim card in other mobile acts wonky - bad sim card. You could always ask your carrier for a new sim card. But I suspect one of the other factors will show up first.