When receiving either a text message or call, my IPhone 4S no longer displays who is calling or texting (only the phone number) of people that are...

Thank you for your question. I'll do my best to assist you.

Please try these following steps below:

1. Press the Home button
2. Tap on the Settings icon
3. Tap on the Phone option
4. Tap on the Show My Caller ID option
5. Toggle the Show My Caller ID option ON

If the Show My Caller ID toggle is greyed out, your mobile account has not been provisioned to change this setting from your phone and you will need to contact your service provider to activate it on their system.

I hope this answers your question. If it does, please click the Accept Answer button below the answer. You must be logged in to see this button. If you have any follow-up questions, please post your comments below this answer.

Thanks again.
Glenn

Thanks for your reply.

Please provide the answer to these questions for us to find other resolution:

1. Have you just upgraded your phone?
2. What was your previous handset?
3. Was it working fine when you first got your iPhone 4S?
4. If yes, have you change some settings on it before the problem started?

Can we please check if the person who called you or sent you a message have the same number saved on your contact list?

Regards,
Glenn

That's a bit weird but it really happen sometimes if there are some glitch on the system that handles you contacts.

Since you haven't change any settings on your phone, a simple restore might fix the issue. Make sure that you create a backup data first on iTunes before restoring.

-Glenn

Thank you for your question. I'll do my best to assist you.

Glenn has a point checking the Caller ID on your phone, if it is grayed out, you may want to check your network provider if Caller ID is enabled on your account.
You may also want to do a reset network settings and waiting for 10 seconds. They refresh the network settings they say it fixes the issue with the Caller ID.

Please try these following steps below:

Press the Home button.
Tap on the Settings icon.
Tap on the General option.
Tap on the Reset option.
Tap on Reset Network Settings.
* wait for 10 seconds and re-check.

I hope this answers your question. If it does, please click the Accept Answer button below the answer. You must be logged in to see this button. If you have any follow-up questions, please post your comments below this answer.

Thanks again.
Chris

Thanks for your question. Sounds like the other guys have great answers, but I think I have an additional idea.

I've notice this same problem on my iPhone when I was syncing the phone contacts and calendar between computers using MobileMe (now iCloud). What I found where some of my contact photos were getting deleted from my contacts and some of my contacts where getting completely deleted during the sync.

Now I know you already said you have the contact of the person calling on your phone. I suggest making sure the contact is on your phone now (under Contacts App) and that the phone number they are calling from is also added to that Contact card. If not, then you need to add it back.

If this doesn't fix your problem, make sure you also try what the other Experts, Glenn and Chris have suggested. Between the three of us, we will helpfully get your callers identification back.

Thank you.

Matthew Pomar

Base on your description I don't think there is something wrong with the settings of your contacts since it was working before and you've even double or triple checked that the numbers names with photos are still saved on your phone.

I don't see anything wrong with your network provider cause the number is showing on your screen but not the name and pictures.

This happens very rare but I experienced this it with my old Nokia (but yours is an iPhone) phone years ago when I have accidentally duplicated all my contacts that caused of the phone not showing the names of callers. Maybe you can check that as well.

I'm not sure if you have already tried what Chris and I suggested but if you haven't that will be our last resort. You can try Chris' suggestion (Resetting Network Settings) as this will not delete any data on your phone. But if its still the same, you would really have to sync first your iPhone to iTunes or iCloud to have your contacts and other data backed up then restore your phone to its factory default then restore the back up that you created. Most of the software issues can be fixed by doing a restore (specially if it was working fine before) as this will reconfigure your phone's system configuration that cannot be fixed just by going to the settings manually.

Hope this will..

Thanks,
Glenn

I did a little research about your concern and this is what I found out, the 5.0.1 update came with few bugs and one of them would be the contacts are not recognized by the device. Apple is aware of the situation and that they are doing their best to resolve this. Apple says that they will be releasing 5.0.2 update within a week to fix this.

I found an article How to Fix iOS 5.0.1 Contact Bug on iPhone 4S. Hope this helps.

Cheers.

Chris