Hi @dhenry4 ,
Seems as though the SIM card reader may be faulty.
The other carriers might have showed up because they operate on the same frequencies as your phone supports. However your carrier's SIM card and the fact that the phone may be 'locked' to Cityfone would have prevented you from connecting to them. As I said it was only to prove that the signal detect circuits were working and that the fault lay elsewhere i.e. the SIM card reader.
Also I would hesitate to use the solution as described in the answer above. Allowing any liquid to come into contact with electronics is just asking for trouble
Hi,
A loose antenna cable may be the problem. Try writing to the SIM card i.e move Contacts to SIM card etc, that will tell you if you can read / write OK to the card.
Here is a link to the Ifixit guide repair to your phone. In Step 8 you can see the antenna cable.
Nexus 5 Motherboard Replacement
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Hi,
Check in Settings > Wireless and networks > More > Network operators > Select Manually to see if it can detect other carriers. If so then the signal detect circuits seem to be working.
Have you tried another known working compatible network SIM card in your phone to see if it works, just to doubly prove that it is the phone that is the problem?
crwdns2934271:0crwdnd2934271:0 jayeff crwdne2934271:0
Tried using my wife's SIM in it, and it seemed like it had signal for a minute or so before reverting back to no signal. It's possible now that it isnt recognizing SIMs at all. Before it was, though, the Network Operators menu was populated with a few choices. Choosing any of them did would not connect the phone.
Thanks!
crwdns2934271:0crwdnd2934271:0 Daniel Henry crwdne2934271:0