I don't have signal at all after update, where I used to have 3g?

[jcwarn]

How can I go delete the update and go back to the old android?

[tikibar1 · Accepted solution]

Sometimes the updates switch the network setting from LTE/CDMA to Global, you might check that ... also removing/reinserting the SIM card may help.

[Snn5]

The update cannot be rolled-back.

[jcwarn]

there's 3 options on network mode, Global, LTE/CDMA and LET/GSM/UMTS, which one is it supposed to be on?

Thanks for your help!

[tikibar1]

LTE/CDMA

[jcwarn]

I updated the network mode to LTE/CDMA, restarted the phone and nothing

[tikibar1]

Have you tried removing the SIM card for a few minutes (be careful not to touch the gold contacts), then reinserting and allowing it to establish a fresh network connection?

Remove the SIM Card Samsung Galaxy S 4 | Verizon Wireless

[jcwarn]

I just finished doing that, still nothing....this is very irritating. Is there something else that can be done? I have a freaking X on top of my bar....and even going outside my office took 3 min after restating the phone to get signal.

[tikibar1]

So you did get a signal after going outside?  Cell service isn't guaranteed inside buildings.  You could try a new SIM card ... they're free at your local Corporate VzW store or by contacting Customer Service.

[jcwarn]

I did get signal outside, but the thing is that I used to get signal inside too. I will try to contact CS later on today.

thanks for all your help!