Carrier recognized but still "No Service"?

[Krupke]

SOLVED! In record time, less than 10 min.! How? Turns out it was because "3G" and "DATA" was switched off in SBSETTINGS. Not even sure why that matters, and would kill my cell signal since they are both internet related settings. And the SIM has an LTE plan, not 3G!

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I have an unlocked 4s, and a few times I have used a SIM card with it from another phone on another carrier. But for some strange reason, I am no longer able to use that SIM card (which nevertheless works fine in its original phone). I get "No Service". However, the carrier name shows up when I take NETWORK SELECTION off of "Automatic". So it does recognize the SIM.

I have tried reinserting the card many times. I have tried resetting network settings, and tried manually selecting the 3 carrier IDs under NETWORK SELECTION. (It lists the carrier name 3 times. Sometimes it lists "(3G)" twice next to the name, sometimes only once.).

Are there other settings to try or what could the deal be? (I know its not blocked or blacklisted, I checked the IMEI just in case!).

 

[eyoungren]

Just two things here. You may have an LTE plan, but with a 4s you will NEVER see LTE on your iPhone.

The iPhone 5 was the first LTE capable iPhone. You are stuck on 3G.

Also, I'm not sure you realize it or not, but the fact that you mention SBSettings means that your iPhone is jailbroken and that you are using either iOS 6.x or less because iOS 7 is not jailbroken yet. SBSettings is a jailbreak tweak. If you didn't do the jailbreak yourself then this would explain why you don't understand what SBSsettings does.

If you did jailbreak your iPhone then you might want to read up on jailbreaking a bit. SBSettings is a basic tweak that controls most settings on your phone that you normally access through the Settings app. Not understanding that indicates that you are unfamiliar with jailbreaking.

You should know then that if you are forced to restore you will be forced to update to iOS7 and that will remove any jailbreak tweaks and apps. The sudden disappearance of any of the jailbreak stuff that you use currently (without knowing) is likely to be a big shock if you get forced to iOS 7.

 

[Krupke]

Thanks for mentioning it, I never thought about the fact that I can't do LTE on the 4s. Its worth pointing out, but I don't think it matters much to me. I've never noticed much of a browser speed difference between my 4s and my S3, which does LTE.

I did the jailbreak myself, I've hacked my own themes for the phone, I know SBSETTINGS quite well, so I'd say I'm quite familiar with jailbreaking. Its not a lack of jailbreaking or SBSETTINGS knowledge that I have. Its a lack of knowing how a 3G data switch setting turns off the cell radio! Do you know what the relation is?

And yes, I do know that a forced restore will upgrade me to iOS7. Which is why I hope and I pray every day that does not happen. In case the praying doesn't work, I installed several lock mechanisms on both my iPhone and my iMac that make things very emphatic to Apple that they are NOT going to force me to update my iOS system! (Even if it wasn't going to break my jailbreak, I would not ever switch to iOS7, as I absolutely loathe the look and feel of this new system!).

 

[eyoungren]

Thanks for mentioning it, I never thought about the fact that I can't do LTE on the 4s. Its worth pointing out, but I don't think it matters much to me. I've never noticed much of a browser speed difference between my 4s and my S3, which does LTE.

I did the jailbreak myself, I've hacked my own themes for the phone, I know SBSETTINGS quite well, so I'd say I'm quite familiar with jailbreaking. Its not a lack of jailbreaking or SBSETTINGS knowledge that I have. Its a lack of knowing how a 3G data switch setting turns off the cell radio! Do you know what the relation is?

And yes, I do know that a forced restore will upgrade me to iOS7. Which is why I hope and I pray every day that does not happen. In case the praying doesn't work, I installed several lock mechanisms on both my iPhone and my iMac that make things very emphatic to Apple that they are NOT going to force me to update my iOS system! (Even if it wasn't going to break my jailbreak, I would not ever switch to iOS7, as I absolutely loathe the look and feel of this new system!).

Allright, I get you. No idea why SBSettings would do that.

And, BTW, I'm with you on iOS7. I prefer an OS that has not been designed by Fisher Price or PlaySkool so I am waiting for the iOS 7 jailbreak before I update from my current jailbroken iOS 6.